diff --git a/.gitignore b/.gitignore
index 1299f3e..61d9bad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -42,3 +42,5 @@ db.sqlite3
 
 # Don't git index
 whoosh_index/
+
+migrations/
diff --git a/apps/participation/admin.py b/apps/participation/admin.py
index 25bbdcc..acef641 100644
--- a/apps/participation/admin.py
+++ b/apps/participation/admin.py
@@ -4,19 +4,14 @@
 from django.contrib import admin
 from django.utils.translation import gettext_lazy as _
 
-from .models import Participation, Phase, Question, Team, Video
+from .models import Participation, Pool, Solution, Synthesis, Team, Tournament
 
 
 @admin.register(Team)
 class TeamAdmin(admin.ModelAdmin):
-    list_display = ('name', 'trigram', 'problem', 'valid',)
+    list_display = ('name', 'trigram', 'valid',)
     search_fields = ('name', 'trigram',)
-    list_filter = ('participation__problem', 'participation__valid',)
-
-    def problem(self, team):
-        return team.participation.get_problem_display()
-
-    problem.short_description = _('problem number')
+    list_filter = ('participation__valid',)
 
     def valid(self, team):
         return team.participation.valid
@@ -26,24 +21,29 @@ class TeamAdmin(admin.ModelAdmin):
 
 @admin.register(Participation)
 class ParticipationAdmin(admin.ModelAdmin):
-    list_display = ('team', 'problem', 'valid',)
+    list_display = ('team', 'valid',)
     search_fields = ('team__name', 'team__trigram',)
-    list_filter = ('problem', 'valid',)
+    list_filter = ('valid',)
 
 
-@admin.register(Video)
-class VideoAdmin(admin.ModelAdmin):
-    list_display = ('participation', 'link',)
-    search_fields = ('participation__team__name', 'participation__team__trigram', 'link',)
+@admin.register(Pool)
+class PoolAdmin(admin.ModelAdmin):
+    search_fields = ('participations__team__name', 'participations__team__trigram',)
 
 
-@admin.register(Question)
-class QuestionAdmin(admin.ModelAdmin):
-    list_display = ('participation', 'question',)
-    search_fields = ('participation__team__name', 'participation__team__trigram', 'question',)
+@admin.register(Solution)
+class SolutionAdmin(admin.ModelAdmin):
+    list_display = ('participation',)
+    search_fields = ('participation__team__name', 'participation__team__trigram',)
 
 
-@admin.register(Phase)
-class PhaseAdmin(admin.ModelAdmin):
-    list_display = ('phase_number', 'start', 'end',)
-    ordering = ('phase_number', 'start',)
+@admin.register(Synthesis)
+class SynthesisAdmin(admin.ModelAdmin):
+    list_display = ('participation',)
+    search_fields = ('participation__team__name', 'participation__team__trigram',)
+
+
+@admin.register(Tournament)
+class TournamentAdmin(admin.ModelAdmin):
+    list_display = ('name',)
+    search_fields = ('name',)
diff --git a/apps/participation/apps.py b/apps/participation/apps.py
index e76d270..bb84d56 100644
--- a/apps/participation/apps.py
+++ b/apps/participation/apps.py
@@ -12,7 +12,6 @@ class ParticipationConfig(AppConfig):
     name = 'participation'
 
     def ready(self):
-        from participation.signals import create_team_participation, delete_related_videos, update_mailing_list
+        from participation.signals import create_team_participation, update_mailing_list
         pre_save.connect(update_mailing_list, "participation.Team")
-        pre_delete.connect(delete_related_videos, "participation.Participation")
         post_save.connect(create_team_participation, "participation.Team")
diff --git a/apps/participation/forms.py b/apps/participation/forms.py
index 6ec054f..7d17e5f 100644
--- a/apps/participation/forms.py
+++ b/apps/participation/forms.py
@@ -3,13 +3,11 @@
 
 import re
 
-from bootstrap_datepicker_plus import DateTimePickerInput
 from django import forms
-from django.core.exceptions import ObjectDoesNotExist, ValidationError
-from django.db.models import Q
+from django.core.exceptions import ValidationError
 from django.utils.translation import gettext_lazy as _
 
-from .models import Participation, Phase, Question, Team, Video
+from .models import Participation, Team
 
 
 class TeamForm(forms.ModelForm):
@@ -25,7 +23,7 @@ class TeamForm(forms.ModelForm):
 
     class Meta:
         model = Team
-        fields = ('name', 'trigram', 'grant_animath_access_videos',)
+        fields = ('name', 'trigram',)
 
 
 class JoinTeamForm(forms.ModelForm):
@@ -56,7 +54,7 @@ class ParticipationForm(forms.ModelForm):
     """
     class Meta:
         model = Participation
-        fields = ('problem',)
+        fields = ('tournament',)
 
 
 class RequestValidationForm(forms.Form):
@@ -87,108 +85,3 @@ class ValidateParticipationForm(forms.Form):
         label=_("Message to address to the team:"),
         widget=forms.Textarea(),
     )
-
-
-class UploadVideoForm(forms.ModelForm):
-    """
-    Form to upload a video, for a solution or a synthesis.
-    """
-    class Meta:
-        model = Video
-        fields = ('link',)
-
-    def clean(self):
-        if Phase.current_phase().phase_number != 1 and Phase.current_phase().phase_number != 4 and self.instance.link:
-            self.add_error("link", _("You can't upload your video after the deadline."))
-        return super().clean()
-
-
-class ReceiveParticipationForm(forms.ModelForm):
-    """
-    Update the received participation of a participation.
-    """
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        self.fields["received_participation"].queryset = Participation.objects.filter(
-            ~Q(pk=self.instance.pk) & Q(problem=self.instance.problem, valid=True)
-        )
-
-    class Meta:
-        model = Participation
-        fields = ('received_participation',)
-
-
-class SendParticipationForm(forms.ModelForm):
-    """
-    Update the sent participation of a participation.
-    """
-    sent_participation = forms.ModelChoiceField(
-        queryset=Participation.objects,
-        label=lambda: _("Send to team"),
-    )
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        try:
-            self.fields["sent_participation"].initial = self.instance.sent_participation
-        except ObjectDoesNotExist:     # No sent participation
-            pass
-        self.fields["sent_participation"].queryset = Participation.objects.filter(
-            ~Q(pk=self.instance.pk) & Q(problem=self.instance.problem, valid=True)
-        )
-
-    def clean(self, commit=True):
-        cleaned_data = super().clean()
-        if "sent_participation" in cleaned_data:
-            participation = cleaned_data["sent_participation"]
-            participation.received_participation = self.instance
-            self.instance = participation
-        return cleaned_data
-
-    class Meta:
-        model = Participation
-        fields = ('sent_participation',)
-
-
-class QuestionForm(forms.ModelForm):
-    """
-    Create or update a question.
-    """
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        self.fields["question"].widget.attrs.update({"placeholder": _("How did you get the idea to ...?")})
-
-    def clean(self):
-        if Phase.current_phase().phase_number != 2:
-            self.add_error(None, _("You can only create or update a question during the second phase."))
-        return super().clean()
-
-    class Meta:
-        model = Question
-        fields = ('question',)
-
-
-class PhaseForm(forms.ModelForm):
-    """
-    Form to update the calendar of a phase.
-    """
-    class Meta:
-        model = Phase
-        fields = ('start', 'end',)
-        widgets = {
-            'start': DateTimePickerInput(format='%d/%m/%Y %H:%M'),
-            'end': DateTimePickerInput(format='%d/%m/%Y %H:%M'),
-        }
-
-    def clean(self):
-        # Ensure that dates are in a right order
-        cleaned_data = super().clean()
-        start = cleaned_data["start"]
-        end = cleaned_data["end"]
-        if end <= start:
-            self.add_error("end", _("Start date must be before the end date."))
-        if Phase.objects.filter(phase_number__lt=self.instance.phase_number, end__gt=start).exists():
-            self.add_error("start", _("This phase must start after the previous phases."))
-        if Phase.objects.filter(phase_number__gt=self.instance.phase_number, start__lt=end).exists():
-            self.add_error("end", _("This phase must end after the next phases."))
-        return cleaned_data
diff --git a/apps/participation/management/commands/setup_third_phase.py b/apps/participation/management/commands/setup_third_phase.py
deleted file mode 100644
index c0e1f8b..0000000
--- a/apps/participation/management/commands/setup_third_phase.py
+++ /dev/null
@@ -1,44 +0,0 @@
-# Copyright (C) 2020 by Animath
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-from tfjm.matrix import Matrix, RoomVisibility
-from django.core.management import BaseCommand
-from participation.models import Participation
-
-
-class Command(BaseCommand):
-    def handle(self, *args, **options):
-        for participation in Participation.objects.filter(valid=True).all():
-            for i, question in enumerate(participation.questions.order_by("id").all()):
-                solution_author = participation.received_participation.team
-                alias = f"equipe-{solution_author.trigram.lower()}-question-{i}"
-                room_id = f"#{alias}:tfjm.org"
-                Matrix.create_room(
-                    visibility=RoomVisibility.public,
-                    alias=alias,
-                    name=f"Solution équipe {solution_author.trigram} - question {i+1}",
-                    topic=f"Échange entre l'équipe {solution_author.name} ({solution_author.trigram}) "
-                          f"et l'équipe {participation.team.name} ({participation.team.trigram}) "
-                          f"autour de la question {i+1} sur le problème {participation.problem}",
-                    federate=False,
-                    invite=[f"@{registration.matrix_username}:tfjm.org" for registration in
-                            list(participation.team.students.all()) + list(participation.team.coachs.all()) +
-                            list(solution_author.students.all()) + list(solution_author.coachs.all())],
-                )
-                Matrix.set_room_power_level_event(room_id, "events_default", 21)
-                for registration in solution_author.students.all():
-                    Matrix.set_room_power_level(room_id,
-                                                f"@{registration.matrix_username}:tfjm.org", 42)
-
-                Matrix.send_message(room_id, "Bienvenue dans la troisième phase du TFJM² !")
-                Matrix.send_message(room_id, f"L'équipe {participation.team.name} a visionné la vidéo de l'équipe "
-                                    f"{solution_author.name} sur le problème {participation.problem}, et a posé "
-                                    "une série de questions.")
-                Matrix.send_message(room_id, "L'équipe ayant composé la vidéo doit maintenant proposer une réponse.")
-                Matrix.send_message(room_id, "Une fois la réponse apportée, vous pourrez ensuite échanger plus "
-                                             "librement autour de la question, au travers de ce canal.")
-                Matrix.send_message(room_id, "**Question posée :**", formatted_body="<strong>Question posée :</strong>")
-                Matrix.send_message(room_id, question.question,
-                                    formatted_body=f"<font color=\"#ff0000\">{question.question}</font>")
-
-                # TODO Setup the bot the set the power level of all members of the room to 42
diff --git a/apps/participation/migrations/0001_initial.py b/apps/participation/migrations/0001_initial.py
deleted file mode 100644
index 903bf86..0000000
--- a/apps/participation/migrations/0001_initial.py
+++ /dev/null
@@ -1,138 +0,0 @@
-# Generated by Django 3.1.3 on 2020-11-04 12:05
-
-import django.core.validators
-from django.db import migrations, models
-import django.utils.timezone
-
-
-def register_phases(apps, _):
-    """
-    Import the different phases of the action
-    """
-    Phase = apps.get_model("participation", "phase")
-    Phase.objects.get_or_create(
-        phase_number=1,
-        description="Soumission des vidéos",
-    )
-    Phase.objects.get_or_create(
-        phase_number=2,
-        description="Phase de questions",
-    )
-    Phase.objects.get_or_create(
-        phase_number=3,
-        description="Phase d'échanges entre les équipes",
-    )
-    Phase.objects.get_or_create(
-        phase_number=4,
-        description="Synthèse de l'échange",
-    )
-
-
-def reverse_phase_registering(apps, _):  # pragma: no cover
-    """
-    Drop all phases in order to unapply this migration.
-    """
-    Phase = apps.get_model("participation", "phase")
-    Phase.objects.all().delete()
-
-
-class Migration(migrations.Migration):
-
-    initial = True
-
-    dependencies = [
-    ]
-
-    operations = [
-        migrations.CreateModel(
-            name='Participation',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('problem', models.IntegerField(choices=[(1, 'Problem #1'), (2, 'Problem #2'), (3, 'Problem #3')], default=None, null=True, verbose_name='problem number')),
-                ('valid', models.BooleanField(default=None, help_text='The video got the validation of the administrators.', null=True, verbose_name='valid')),
-            ],
-            options={
-                'verbose_name': 'participation',
-                'verbose_name_plural': 'participations',
-            },
-        ),
-        migrations.CreateModel(
-            name='Phase',
-            fields=[
-                ('phase_number', models.AutoField(primary_key=True, serialize=False, unique=True, verbose_name='phase number')),
-                ('description', models.CharField(max_length=255, verbose_name='phase description')),
-                ('start', models.DateTimeField(default=django.utils.timezone.now, verbose_name='start date of the given phase')),
-                ('end', models.DateTimeField(default=django.utils.timezone.now, verbose_name='end date of the given phase')),
-            ],
-            options={
-                'verbose_name': 'phase',
-                'verbose_name_plural': 'phases',
-            },
-        ),
-        migrations.CreateModel(
-            name='Question',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('question', models.TextField(verbose_name='question')),
-            ],
-        ),
-        migrations.CreateModel(
-            name='Team',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('name', models.CharField(max_length=255, unique=True, verbose_name='name')),
-                ('trigram', models.CharField(help_text='The trigram must be composed of three uppercase letters.', max_length=3, unique=True, validators=[django.core.validators.RegexValidator('[A-Z]{3}')], verbose_name='trigram')),
-                ('access_code', models.CharField(help_text='The access code let other people to join the team.', max_length=6, verbose_name='access code')),
-                ('grant_animath_access_videos', models.BooleanField(default=False, help_text='Give the authorisation to publish the video on the main website to promote the action.', verbose_name='Grant Animath to publish my video')),
-            ],
-            options={
-                'verbose_name': 'team',
-                'verbose_name_plural': 'teams',
-            },
-        ),
-        migrations.CreateModel(
-            name='Video',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('link', models.URLField(help_text='The full video link.', verbose_name='link')),
-                ('valid', models.BooleanField(default=None, help_text='The video got the validation of the administrators.', null=True, verbose_name='valid')),
-            ],
-            options={
-                'verbose_name': 'video',
-                'verbose_name_plural': 'videos',
-            },
-        ),
-        migrations.AddIndex(
-            model_name='team',
-            index=models.Index(fields=['trigram'], name='participati_trigram_239255_idx'),
-        ),
-        migrations.AddField(
-            model_name='question',
-            name='participation',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='questions', to='participation.participation', verbose_name='participation'),
-        ),
-        migrations.AddField(
-            model_name='participation',
-            name='received_participation',
-            field=models.OneToOneField(default=None, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='sent_participation', to='participation.participation', verbose_name='received participation'),
-        ),
-        migrations.AddField(
-            model_name='participation',
-            name='solution',
-            field=models.OneToOneField(default=None, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='participation_solution', to='participation.video', verbose_name='solution video'),
-        ),
-        migrations.AddField(
-            model_name='participation',
-            name='synthesis',
-            field=models.OneToOneField(default=None, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='participation_synthesis', to='participation.video', verbose_name='synthesis video'),
-        ),
-        migrations.AddField(
-            model_name='participation',
-            name='team',
-            field=models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to='participation.team', verbose_name='team'),
-        ),
-        migrations.RunPython(
-            register_phases,
-            reverse_code=reverse_phase_registering,
-        )
-    ]
diff --git a/apps/participation/models.py b/apps/participation/models.py
index 9d1583b..f2b7123 100644
--- a/apps/participation/models.py
+++ b/apps/participation/models.py
@@ -44,6 +44,14 @@ class Team(models.Model):
         help_text=_("The access code let other people to join the team."),
     )
 
+    @property
+    def students(self):
+        return self.participants.filter(studentregistration__isnull=False)
+
+    @property
+    def coachs(self):
+        return self.participants.filter(coachregistration__isnull=False)
+
     @property
     def email(self):
         """
@@ -224,33 +232,6 @@ class Participation(models.Model):
         help_text=_("The video got the validation of the administrators."),
     )
 
-    solution = models.OneToOneField(
-        "participation.Video",
-        on_delete=models.SET_NULL,
-        related_name="participation_solution",
-        null=True,
-        default=None,
-        verbose_name=_("solution video"),
-    )
-
-    received_participation = models.OneToOneField(
-        "participation.Participation",
-        on_delete=models.PROTECT,
-        related_name="sent_participation",
-        null=True,
-        default=None,
-        verbose_name=_("received participation"),
-    )
-
-    synthesis = models.OneToOneField(
-        "participation.Video",
-        on_delete=models.SET_NULL,
-        related_name="participation_synthesis",
-        null=True,
-        default=None,
-        verbose_name=_("synthesis video"),
-    )
-
     def get_absolute_url(self):
         return reverse_lazy("participation:participation_detail", args=(self.pk,))
 
@@ -324,7 +305,7 @@ class Solution(models.Model):
     class Meta:
         verbose_name = _("solution")
         verbose_name_plural = _("solutions")
-        unique_by = (('participation', 'problem', 'final_solution', ), )
+        unique_together = (('participation', 'problem', 'final_solution', ), )
 
 
 class Synthesis(models.Model):
@@ -359,4 +340,4 @@ class Synthesis(models.Model):
     class Meta:
         verbose_name = _("synthesis")
         verbose_name_plural = _("syntheses")
-        unique_by = (('participation', 'pool', 'type', ), )
+        unique_together = (('participation', 'pool', 'type', ), )
diff --git a/apps/participation/search_indexes.py b/apps/participation/search_indexes.py
index 22e722a..1512a71 100644
--- a/apps/participation/search_indexes.py
+++ b/apps/participation/search_indexes.py
@@ -3,7 +3,7 @@
 
 from haystack import indexes
 
-from .models import Participation, Team, Video
+from .models import Participation, Team
 
 
 class TeamIndex(indexes.ModelSearchIndex, indexes.Indexable):
@@ -24,13 +24,3 @@ class ParticipationIndex(indexes.ModelSearchIndex, indexes.Indexable):
 
     class Meta:
         model = Participation
-
-
-class VideoIndex(indexes.ModelSearchIndex, indexes.Indexable):
-    """
-    Index all teams by their team name and team trigram.
-    """
-    text = indexes.NgramField(document=True, use_template=True)
-
-    class Meta:
-        model = Video
diff --git a/apps/participation/signals.py b/apps/participation/signals.py
index 45dc5de..14f3830 100644
--- a/apps/participation/signals.py
+++ b/apps/participation/signals.py
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 from tfjm.lists import get_sympa_client
-from participation.models import Participation, Team, Video
+from participation.models import Participation, Team
 
 
 def create_team_participation(instance, created, **_):
@@ -10,10 +10,6 @@ def create_team_participation(instance, created, **_):
     When a team got created, create an associated team and create Video objects.
     """
     participation = Participation.objects.get_or_create(team=instance)[0]
-    if not participation.solution:
-        participation.solution = Video.objects.create()
-    if not participation.synthesis:
-        participation.synthesis = Video.objects.create()
     participation.save()
     if not created:
         participation.team.create_mailing_list()
@@ -38,9 +34,3 @@ def update_mailing_list(instance: Team, **_):
                 get_sympa_client().subscribe(coach.user.email, f"equipe-{instance.trigram.lower()}", False,
                                              f"{coach.user.first_name} {coach.user.last_name}")
 
-
-def delete_related_videos(instance: Participation, **_):
-    if instance.solution:
-        instance.solution.delete()
-    if instance.synthesis:
-        instance.synthesis.delete()
diff --git a/apps/participation/tables.py b/apps/participation/tables.py
index cfd121f..d38cd90 100644
--- a/apps/participation/tables.py
+++ b/apps/participation/tables.py
@@ -1,28 +1,10 @@
 # Copyright (C) 2020 by Animath
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 import django_tables2 as tables
 
-from .models import Phase, Team
-
-
-class CalendarTable(tables.Table):
-    class Meta:
-        attrs = {
-            'class': 'table table condensed table-striped',
-        }
-        row_attrs = {
-            'class': lambda record: 'bg-success' if timezone.now() > record.end else
-                                    'bg-warning' if timezone.now() > record.start else
-                                    'bg-danger',
-            'data-id': lambda record: str(record.phase_number),
-        }
-        model = Phase
-        fields = ('phase_number', 'description', 'start', 'end',)
-        template_name = 'django_tables2/bootstrap4.html'
-        order_by = ('phase_number',)
+from .models import Team
 
 
 # noinspection PyTypeChecker
diff --git a/apps/participation/templates/participation/participation_detail.html b/apps/participation/templates/participation/participation_detail.html
index ae0a2a2..d4393eb 100644
--- a/apps/participation/templates/participation/participation_detail.html
+++ b/apps/participation/templates/participation/participation_detail.html
@@ -12,289 +12,7 @@
             <dl class="row">
                 <dt class="col-sm-2">{% trans "Team:" %}</dt>
                 <dd class="col-sm-10"><a href="{% url "participation:team_detail" pk=participation.team.pk %}">{{ participation.team }}</a></dd>
-
-                <dt class="col-sm-2">{% trans "Chosen problem:" %}</dt>
-                <dd class="col-sm-10">{{ participation.get_problem_display }}</dd>
             </dl>
-
-            <div id="solution-container">
-                <dl class="row">
-                    {% trans "No video sent" as novideo %}
-                    <dt class="col-sm-2">{% trans "Proposed solution:" %}</dt>
-                    <dd class="col-sm-10"><a href="{{ participation.solution.link|default:"#" }}"{% if participation.solution.link %} target="_blank"{% endif %}>
-                        {{ participation.solution.link|default:novideo }}</a>
-                        {% if current_phase.phase_number == 1 or participation.solution.link == "" %}
-                            <button class="btn btn-primary" data-toggle="modal" data-target="#uploadSolutionModal">{% trans "Upload" %}</button>
-                        {% endif %}
-                        {% if participation.solution.link %}
-                            <button class="btn btn-info" data-toggle="modal" data-target="#displaySolutionModal">{% trans "Display" %}</button>
-                        {% endif %}
-                    </dd>
-                </dl>
-            </div>
         </div>
     </div>
-
-    {% if user.registration.is_admin or current_phase.phase_number >= 2 %}
-    <hr>
-
-    <div class="row">
-        <div class="col-md-6">
-            <div class="card bg-light shadow">
-                <div class="card-header text-center">
-                    <h4>{% trans "Sent solution" %}</h4>
-                </div>
-                <div class="card-body">
-                    <dl class="row">
-                        <dt class="col-xl-5 text-right">{% trans "Team that received your solution:" %}</dt>
-                        <dd class="col-md-5">{{ participation.sent_participation.team|default:any }}</dd>
-                        {% if user.registration.is_admin %}
-                            <dd class="col-xs-2">
-                                <button class="btn btn-primary" data-toggle="modal" data-target="#defineSentParticipationModal">{% trans "Change" %}</button>
-                            </dd>
-                        {% endif %}
-                    </dl>
-
-                    {% if current_phase.phase_number == 2 %}
-                        <div class="alert alert-info">
-                            {% blocktrans trimmed %}
-                                The mentioned team received your video. They are now watching your video,
-                                and formulating questions. You would be able to exchange with the other phase during
-                                the next phase.
-                            {% endblocktrans %}
-                        </div>
-                    {% elif current_phase.phase_number == 3 %}
-                        <div class="alert alert-info">
-                            {% blocktrans trimmed with user_id=user.pk %}
-                                The other team sent you questions about your solution. Your are now able to answer them,
-                                then to exchange freely with the other team. You can click on the Chat button, or to
-                                connect to your dedicated Matrix account:
-                                <code>@tfjm_{{ user_id }}:tfjm.org</code>.
-                                You can use your own Matrix client, or use the dedicated Element client:
-                                <a href="https://element.tfjm.org">element.correpondances-maths.fr</a>
-                            {% endblocktrans %}
-                        </div>
-                    {% elif current_phase.phase_number == 4 %}
-                        <dl class="row">
-                            <dt class="col-xl-5 text-right">{% trans "Synthesis from the other team:" %}</dt>
-                            <dd class="col-sm-7"><a href="{{ participation.received_participation.synthesis.link|default:"#" }}"{% if participation.received_participation.synthesis.link %} target="_blank"{% endif %}>
-                                {{ participation.received_participation.synthesis.link|default:novideo }}</a>
-                                {% if participation.received_participation.synthesis.link %}
-                                    <button class="btn btn-info" data-toggle="modal" data-target="#displayOtherSynthesisModal">{% trans "Display" %}</button>
-                                {% endif %}
-                            </dd>
-                        </dl>
-                    {% endif %}
-                </div>
-            </div>
-        </div>
-        <div class="col-md-6">
-            <div class="card bg-light shadow">
-                <div class="card-header text-center">
-                    <h4>{% trans "Received solution" %}</h4>
-                </div>
-                <div class="card-body">
-                    <dl class="row">
-                        <dt class="col-xl-5 text-right">{% trans "Team that sent you their solution:" %}</dt>
-                        <dd class="col-md-5">{{ participation.received_participation.team|default:any }}</dd>
-                        {% if user.registration.is_admin %}
-                            <dd class="col-xs-2">
-                                <button class="btn btn-primary" data-toggle="modal" data-target="#defineReceivedParticipationModal">{% trans "Change" %}</button>
-                            </dd>
-                        {% endif %}
-
-                        <dt class="col-xl-5 text-right">{% trans "Proposed solution:" %}</dt>
-                        <dd class="col-sm-7"><a href="{{ participation.received_participation.solution.link|default:"#" }}"{% if participation.received_participation.solution.link %} target="_blank"{% endif %}>
-                            {{ participation.received_participation.solution.link|default:novideo }}</a>
-                            {% if participation.received_participation.solution.link %}
-                                <button class="btn btn-info" data-toggle="modal" data-target="#displayOtherSolutionModal">{% trans "Display" %}</button>
-                            {% endif %}
-                        </dd>
-
-                    {% if current_phase.phase_number == 2 %}
-                        <div class="alert alert-info">
-                        {% blocktrans trimmed %}
-                            You received a solution about the same problem that you treated from another team.
-                            You are now encouraged to see the video, then to ask from 3 to 6 questions about the video.
-                            After that, you will be invited to exchange with the other team about the solution.
-                        {% endblocktrans %}
-                        </div>
-
-                        {% for question in participation.questions.all %}
-                            <dd class="col-md-9 text-truncate">{{ question.question }}</dd>
-                            <dd class="col-md-3">
-                                <button class="btn btn-primary" data-toggle="modal" data-target="#updateQuestion{{ forloop.counter }}Modal">{% trans "Change" %}</button>
-                            </dd>
-                            <hr>
-                        {% endfor %}
-
-                        {% if user.registration.participates %}
-                            <button class="btn btn-success" data-toggle="modal" data-target="#addQuestionModal">
-                                <i class="fas fa-plus-circle"></i> {% trans "Add a question" %}
-                            </button>
-                        {% endif %}
-                    {% elif current_phase.phase_number == 3 %}
-                        <div class="alert alert-info">
-                            {% blocktrans trimmed with user_id=user.pk %}
-                                You sent your questions to the other team about their solution. When they answer to
-                                your questions, you will be able to exchange freely with the other team.
-                                You can click on the Chat button, or to connect to your dedicated Matrix account:
-                                <code>@tfjm_{{ user_id }}:tfjm.org</code>.
-                                You can use your own Matrix client, or use the dedicated Element client:
-                                <a href="https://element.tfjm.org">element.correpondances-maths.fr</a>
-                            {% endblocktrans %}
-                        </div>
-                    {% elif current_phase.phase_number == 4 %}
-                        <div id="solution-container">
-                            <dl class="row">
-                                {% trans "No video sent" as novideo %}
-                                <dt class="col-sm-5 text-right">{% trans "Your synthesis of the exchange:" %}</dt>
-                                <dd class="col-sm-7"><a href="{{ participation.synthesis.link|default:"#" }}"{% if participation.synthesis.link %} target="_blank"{% endif %}>
-                                    {{ participation.synthesis.link|default:novideo }}</a>
-                                    <button class="btn btn-primary" data-toggle="modal" data-target="#uploadSynthesisModal">{% trans "Upload" %}</button>
-                                    {% if participation.synthesis.link %}
-                                        <button class="btn btn-info" data-toggle="modal" data-target="#displaySynthesisModal">{% trans "Display" %}</button>
-                                    {% endif %}
-                                </dd>
-                            </dl>
-                        </div>
-                    {% endif %}
-                    </dl>
-                </div>
-            </div>
-        </div>
-    </div>
-    {% endif %}
-
-{% if user.registration.is_admin %}
-    {% trans "Define received video" as modal_title %}
-    {% trans "Update" as modal_button %}
-    {% url "participation:participation_receive_participation" pk=participation.pk as modal_action %}
-    {% include "base_modal.html" with modal_id="defineReceivedParticipation" %}
-
-    {% trans "Define team that receives your video" as modal_title %}
-    {% trans "Update" as modal_button %}
-    {% url "participation:participation_send_participation" pk=participation.pk as modal_action %}
-    {% include "base_modal.html" with modal_id="defineSentParticipation" %}
-{% endif %}
-
-{% trans "Upload video" as modal_title %}
-{% trans "Upload" as modal_button %}
-{% url "participation:upload_video" pk=participation.solution_id as modal_action %}
-{% include "base_modal.html" with modal_id="uploadSolution" %}
-
-{% trans "Display solution" as modal_title %}
-{% trans "This video platform is not supported yet." as unsupported_platform %}
-{% include "base_modal.html" with modal_id="displaySolution" modal_action="" modal_button="" modal_additional_class="modal-lg" modal_content=participation.solution.as_iframe|default:unsupported_platform %}
-
-
-{% if user.registration.is_admin or current_phase.phase_number >= 2 %}
-    {% if participation.received_participation.solution.link %}
-        {% trans "Display solution" as modal_title %}
-        {% trans "This video platform is not supported yet." as unsupported_platform %}
-        {% include "base_modal.html" with modal_id="displayOtherSolution" modal_action="" modal_button="" modal_additional_class="modal-lg" modal_content=participation.received_participation.solution.as_iframe|default:unsupported_platform %}
-    {% endif %}
-{% endif %}
-
-{% if user.registration.participates and current_phase.phase_number == 2 %}
-    {% trans "Add question" as modal_title %}
-    {% trans "Add" as modal_button %}
-    {% url "participation:add_question" pk=participation.pk as modal_action %}
-    {% include "base_modal.html" with modal_id="addQuestion" modal_button_type="success" %}
-    {% for question in participation.questions.all %}
-        {% with number_str=forloop.counter|stringformat:"d"%}
-            {% with modal_id="updateQuestion"|add:number_str %}
-                {% trans "Delete" as delete %}
-                {% with extra_modal_button='<button class="btn btn-danger" type="button" data-dismiss="modal" data-toggle="modal" data-target="#deleteQuestion'|add:number_str|add:'Modal">'|add:delete|add:"</button>"|safe %}
-                    {% trans "Update question" as modal_title %}
-                    {% trans "Update" as modal_button %}
-                    {% url "participation:update_question" pk=question.pk as modal_action %}
-                    {% include "base_modal.html" %}
-                {% endwith %}
-            {% endwith %}
-
-            {% with modal_id="deleteQuestion"|add:number_str %}
-                {% trans "Delete question" as modal_title %}
-                {% trans "Delete" as modal_button %}
-                {% url "participation:delete_question" pk=question.pk as modal_action %}
-                {% include "base_modal.html" with modal_button_type="danger" %}
-            {% endwith %}
-        {% endwith %}
-    {% endfor %}
-{% endif %}
-
-{% if current_phase.phase_number >= 4 %}
-    {% if participation.received_participation.synthesis.link %}
-        {% trans "Display synthesis" as modal_title %}
-        {% trans "This video platform is not supported yet." as unsupported_platform %}
-        {% include "base_modal.html" with modal_id="displayOtherSynthesis" modal_action="" modal_button="" modal_additional_class="modal-lg" modal_content=participation.received_participation.synthesis.as_iframe|default:unsupported_platform %}
-    {% endif %}
-
-    {% trans "Upload video" as modal_title %}
-    {% trans "Upload" as modal_button %}
-    {% url "participation:upload_video" pk=participation.synthesis_id as modal_action %}
-    {% include "base_modal.html" with modal_id="uploadSynthesis" %}
-
-    {% if participation.synthesis.link %}
-        {% trans "Display synthesis" as modal_title %}
-        {% trans "This video platform is not supported yet." as unsupported_platform %}
-        {% include "base_modal.html" with modal_id="displaySynthesis" modal_action="" modal_button="" modal_additional_class="modal-lg" modal_content=participation.synthesis.as_iframe|default:unsupported_platform %}
-    {% endif %}
-{% endif %}
-{% endblock %}
-
-{% block extrajavascript %}
-    <script>
-        $(document).ready(function() {
-            {% if user.registration.is_admin %}
-                $('button[data-target="#defineReceivedParticipationModal"]').click(function() {
-                    let modalBody = $("#defineReceivedParticipationModal div.modal-body");
-                    if (!modalBody.html().trim())
-                        modalBody.load("{% url "participation:participation_receive_participation" pk=participation.pk %} #form-content");
-                });
-
-                $('button[data-target="#defineSentParticipationModal"]').click(function() {
-                    let modalBody = $("#defineSentParticipationModal div.modal-body");
-                    if (!modalBody.html().trim())
-                        modalBody.load("{% url "participation:participation_send_participation" pk=participation.pk %} #form-content");
-                });
-            {% endif %}
-
-            {% if user.registration.participates and current_phase.phase_number == 2 %}
-                $('button[data-target="#addQuestionModal"]').click(function() {
-                    let modalBody = $("#addQuestionModal div.modal-body");
-                    if (!modalBody.html().trim())
-                        modalBody.load("{% url "participation:add_question" pk=participation.pk %} #form-content");
-                });
-
-                {% for question in participation.questions.all %}
-                    $('button[data-target="#updateQuestion{{ forloop.counter }}Modal"]').click(function() {
-                        let modalBody = $("#updateQuestion{{ forloop.counter }}Modal div.modal-body");
-                        if (!modalBody.html().trim())
-                            modalBody.load("{% url "participation:update_question" pk=question.pk %} #form-content");
-                    });
-
-                    $('button[data-target="#deleteQuestion{{ forloop.counter }}Modal"]').click(function() {
-                        let modalBody = $("#deleteQuestion{{ forloop.counter }}Modal div.modal-body");
-                        if (!modalBody.html().trim())
-                            modalBody.load("{% url "participation:delete_question" pk=question.pk %} #form-content");
-                    });
-                {% endfor %}
-            {% endif %}
-
-            $('button[data-target="#uploadSolutionModal"]').click(function() {
-                let modalBody = $("#uploadSolutionModal div.modal-body");
-                if (!modalBody.html().trim())
-                    modalBody.load("{% url "participation:upload_video" pk=participation.solution_id %} #form-content");
-            });
-
-            {% if current_phase.phase_number == 4 %}
-                $('button[data-target="#uploadSynthesisModal"]').click(function() {
-                    let modalBody = $("#uploadSynthesisModal div.modal-body");
-                    if (!modalBody.html().trim())
-                        modalBody.load("{% url "participation:upload_video" pk=participation.synthesis_id %} #form-content");
-                });
-            {% endif %}
-        });
-    </script>
 {% endblock %}
diff --git a/apps/participation/templates/participation/team_detail.html b/apps/participation/templates/participation/team_detail.html
index f6fcf21..c4a8ffe 100644
--- a/apps/participation/templates/participation/team_detail.html
+++ b/apps/participation/templates/participation/team_detail.html
@@ -45,9 +45,6 @@
             {% trans "any" as any %}
             <dd class="col-sm-6">{{ team.participation.get_problem_display|default:any }}</dd>
 
-            <dt class="col-sm-6 text-right">{% trans "Grant Animath to publish our video:" %}</dt>
-            <dd class="col-sm-6">{{ team.grant_animath_access_videos|yesno }}</dd>
-
             <dt class="col-sm-6 text-right">{% trans "Authorizations:" %}</dt>
             <dd class="col-sm-6">
                 {% for student in team.students.all %}
diff --git a/apps/participation/templatetags/__init__.py b/apps/participation/templatetags/__init__.py
deleted file mode 100644
index dfc9706..0000000
--- a/apps/participation/templatetags/__init__.py
+++ /dev/null
@@ -1,2 +0,0 @@
-# Copyright (C) 2020 by Animath
-# SPDX-License-Identifier: GPL-3.0-or-later
diff --git a/apps/participation/templatetags/calendar.py b/apps/participation/templatetags/calendar.py
deleted file mode 100644
index 0a8477b..0000000
--- a/apps/participation/templatetags/calendar.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# Copyright (C) 2020 by Animath
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-from django import template
-
-from ..models import Phase
-
-
-def current_phase(nb):
-    phase = Phase.current_phase()
-    return phase is not None and phase.phase_number == nb
-
-
-register = template.Library()
-register.filter("current_phase", current_phase)
diff --git a/apps/participation/tests.py b/apps/participation/tests.py
index 8c30e45..c62b90a 100644
--- a/apps/participation/tests.py
+++ b/apps/participation/tests.py
@@ -1,18 +1,15 @@
 # Copyright (C) 2020 by Animath
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from datetime import timedelta
-
 from django.contrib.auth.models import User
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.sites.models import Site
 from django.core.management import call_command
 from django.test import TestCase
 from django.urls import reverse
-from django.utils import timezone
 from registration.models import CoachRegistration, StudentRegistration
 
-from .models import Participation, Phase, Question, Team
+from .models import Participation, Team
 
 
 class TestStudentParticipation(TestCase):
@@ -40,10 +37,7 @@ class TestStudentParticipation(TestCase):
             name="Super team",
             trigram="AAA",
             access_code="azerty",
-            grant_animath_access_videos=True,
         )
-        self.question = Question.objects.create(participation=self.team.participation,
-                                                question="Pourquoi l'existence précède l'essence ?")
         self.client.force_login(self.user)
 
         self.second_user = User.objects.create(
@@ -63,7 +57,6 @@ class TestStudentParticipation(TestCase):
             name="Poor team",
             trigram="FFF",
             access_code="qwerty",
-            grant_animath_access_videos=True,
         )
 
         self.coach = User.objects.create(
@@ -108,29 +101,6 @@ class TestStudentParticipation(TestCase):
         self.assertRedirects(response, "http://" + Site.objects.get().domain +
                              str(self.team.participation.get_absolute_url()), 302, 200)
 
-        # Test video pages
-        response = self.client.get(reverse("admin:index") + "participation/video/")
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.get(reverse("admin:index")
-                                   + f"participation/video/{self.team.participation.solution.pk}/change/")
-        self.assertEqual(response.status_code, 200)
-
-        # Test question pages
-        response = self.client.get(reverse("admin:index") + "participation/question/")
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.get(reverse("admin:index")
-                                   + f"participation/question/{self.question.pk}/change/")
-        self.assertEqual(response.status_code, 200)
-
-        # Test phase pages
-        response = self.client.get(reverse("admin:index") + "participation/phase/")
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.get(reverse("admin:index") + "participation/phase/1/change/")
-        self.assertEqual(response.status_code, 200)
-
     def test_create_team(self):
         """
         Try to create a team.
@@ -141,14 +111,12 @@ class TestStudentParticipation(TestCase):
         response = self.client.post(reverse("participation:create_team"), data=dict(
             name="Test team",
             trigram="123",
-            grant_animath_access_videos=False,
         ))
         self.assertEqual(response.status_code, 200)
 
         response = self.client.post(reverse("participation:create_team"), data=dict(
             name="Test team",
             trigram="TES",
-            grant_animath_access_videos=False,
         ))
         self.assertTrue(Team.objects.filter(trigram="TES").exists())
         team = Team.objects.get(trigram="TES")
@@ -158,7 +126,6 @@ class TestStudentParticipation(TestCase):
         response = self.client.post(reverse("participation:create_team"), data=dict(
             name="Test team 2",
             trigram="TET",
-            grant_animath_access_videos=False,
         ))
         self.assertEqual(response.status_code, 403)
 
@@ -286,13 +253,6 @@ class TestStudentParticipation(TestCase):
         self.user.registration.photo_authorization = "authorization/photo/ananas"
         self.user.registration.save()
 
-        resp = self.client.get(reverse("participation:team_detail", args=(self.team.pk,)))
-        self.assertEqual(resp.status_code, 200)
-        self.assertFalse(resp.context["can_validate"])
-
-        self.team.participation.problem = 2
-        self.team.participation.save()
-
         resp = self.client.get(reverse("participation:team_detail", args=(self.team.pk,)))
         self.assertEqual(resp.status_code, 200)
         self.assertTrue(resp.context["can_validate"])
@@ -383,23 +343,12 @@ class TestStudentParticipation(TestCase):
         response = self.client.get(reverse("participation:update_team", args=(self.team.pk,)))
         self.assertEqual(response.status_code, 200)
 
-        # Form is invalid
         response = self.client.post(reverse("participation:update_team", args=(self.team.pk,)), data=dict(
             name="Updated team name",
             trigram="BBB",
-            grant_animath_access_videos=True,
-            problem=42,
-        ))
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.post(reverse("participation:update_team", args=(self.team.pk,)), data=dict(
-            name="Updated team name",
-            trigram="BBB",
-            grant_animath_access_videos=True,
-            problem=3,
         ))
         self.assertRedirects(response, reverse("participation:team_detail", args=(self.team.pk,)), 302, 200)
-        self.assertTrue(Team.objects.filter(trigram="BBB", participation__problem=3).exists())
+        self.assertTrue(Team.objects.filter(trigram="BBB").exists())
 
     def test_leave_team(self):
         """
@@ -471,199 +420,6 @@ class TestStudentParticipation(TestCase):
         response = self.client.get(reverse("participation:participation_detail", args=(self.team.participation.pk,)))
         self.assertEqual(response.status_code, 403)
 
-    def test_upload_video(self):
-        """
-        Try to send a solution video link.
-        """
-        self.user.registration.team = self.team
-        self.user.registration.save()
-
-        self.team.participation.valid = True
-        self.team.participation.save()
-
-        response = self.client.get(reverse("participation:upload_video", args=(self.team.participation.solution.pk,)))
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.post(reverse("participation:upload_video", args=(self.team.participation.solution.pk,)),
-                                    data=dict(link="https://youtube.com/watch?v=73nsrixx7eI"))
-        self.assertRedirects(response,
-                             reverse("participation:participation_detail", args=(self.team.participation.id,)),
-                             302, 200)
-        self.team.participation.refresh_from_db()
-        self.assertEqual(self.team.participation.solution.platform, "youtube")
-        self.assertEqual(self.team.participation.solution.youtube_code, "73nsrixx7eI")
-
-        response = self.client.get(reverse("participation:participation_detail", args=(self.team.participation.pk,)))
-        self.assertEqual(response.status_code, 200)
-
-        # Set the second phase
-        for i in range(1, 5):
-            Phase.objects.filter(phase_number=i).update(start=timezone.now() + timedelta(days=i - 2),
-                                                        end=timezone.now() + timedelta(days=i - 1))
-        self.assertEqual(Phase.current_phase().phase_number, 2)
-
-        # Can't update the link during the second phase
-        response = self.client.post(reverse("participation:upload_video", args=(self.team.participation.solution.pk,)),
-                                    data=dict(link="https://youtube.com/watch?v=73nsrixx7eI"))
-        self.assertEqual(response.status_code, 200)
-
-    def test_questions(self):
-        """
-        Ensure that creating/updating/deleting a question is working.
-        """
-        self.user.registration.team = self.team
-        self.user.registration.save()
-
-        self.team.participation.valid = True
-        self.team.participation.save()
-
-        response = self.client.get(reverse("participation:add_question", args=(self.team.participation.pk,)))
-        self.assertEqual(response.status_code, 200)
-
-        # We are not in second phase
-        response = self.client.post(reverse("participation:add_question", args=(self.team.participation.pk,)),
-                                    data=dict(question="I got censored!"))
-        self.assertEqual(response.status_code, 200)
-
-        # Set the second phase
-        for i in range(1, 5):
-            Phase.objects.filter(phase_number=i).update(start=timezone.now() + timedelta(days=i - 2),
-                                                        end=timezone.now() + timedelta(days=i - 1))
-        self.assertEqual(Phase.current_phase().phase_number, 2)
-
-        # Create a question
-        response = self.client.post(reverse("participation:add_question", args=(self.team.participation.pk,)),
-                                    data=dict(question="I asked a question!"))
-        self.assertRedirects(response, reverse("participation:participation_detail",
-                                               args=(self.team.participation.pk,)), 302, 200)
-        qs = Question.objects.filter(participation=self.team.participation, question="I asked a question!")
-        self.assertTrue(qs.exists())
-        question = qs.get()
-
-        # Update a question
-        response = self.client.get(reverse("participation:update_question", args=(question.pk,)))
-        self.assertEqual(response.status_code, 200)
-        response = self.client.post(reverse("participation:update_question", args=(question.pk,)), data=dict(
-            question="The question changed!",
-        ))
-        self.assertRedirects(response, reverse("participation:participation_detail",
-                                               args=(self.team.participation.pk,)), 302, 200)
-        question.refresh_from_db()
-        self.assertEqual(question.question, "The question changed!")
-
-        # Delete the question
-        response = self.client.get(reverse("participation:delete_question", args=(question.pk,)))
-        self.assertEqual(response.status_code, 200)
-        response = self.client.post(reverse("participation:delete_question", args=(question.pk,)))
-        self.assertRedirects(response, reverse("participation:participation_detail",
-                                               args=(self.team.participation.pk,)), 302, 200)
-        self.assertFalse(Question.objects.filter(pk=question.pk).exists())
-
-        # Non-authenticated users are redirected to login page
-        self.client.logout()
-        response = self.client.get(reverse("participation:add_question", args=(self.team.participation.pk,)))
-        self.assertRedirects(response, reverse("login") + "?next=" +
-                             reverse("participation:add_question", args=(self.team.participation.pk,)), 302, 200)
-        response = self.client.get(reverse("participation:update_question", args=(self.question.pk,)))
-        self.assertRedirects(response, reverse("login") + "?next=" +
-                             reverse("participation:update_question", args=(self.question.pk,)), 302, 200)
-        response = self.client.get(reverse("participation:delete_question", args=(self.question.pk,)))
-        self.assertRedirects(response, reverse("login") + "?next=" +
-                             reverse("participation:delete_question", args=(self.question.pk,)), 302, 200)
-
-    def test_current_phase(self):
-        """
-        Ensure that the current phase is the good one.
-        """
-        # We are before the beginning
-        for i in range(1, 5):
-            Phase.objects.filter(phase_number=i).update(start=timezone.now() + timedelta(days=2 * i),
-                                                        end=timezone.now() + timedelta(days=2 * i + 1))
-        self.assertEqual(Phase.current_phase(), None)
-
-        # We are after the end
-        for i in range(1, 5):
-            Phase.objects.filter(phase_number=i).update(start=timezone.now() - timedelta(days=2 * i),
-                                                        end=timezone.now() - timedelta(days=2 * i + 1))
-        self.assertEqual(Phase.current_phase().phase_number, Phase.objects.count())
-
-        # First phase
-        for i in range(1, 5):
-            Phase.objects.filter(phase_number=i).update(start=timezone.now() + timedelta(days=i - 1),
-                                                        end=timezone.now() + timedelta(days=i))
-        self.assertEqual(Phase.current_phase().phase_number, 1)
-
-        # Second phase
-        for i in range(1, 5):
-            Phase.objects.filter(phase_number=i).update(start=timezone.now() + timedelta(days=i - 2),
-                                                        end=timezone.now() + timedelta(days=i - 1))
-        self.assertEqual(Phase.current_phase().phase_number, 2)
-
-        # Third phase
-        for i in range(1, 5):
-            Phase.objects.filter(phase_number=i).update(start=timezone.now() + timedelta(days=i - 3),
-                                                        end=timezone.now() + timedelta(days=i - 2))
-        self.assertEqual(Phase.current_phase().phase_number, 3)
-
-        # Fourth phase
-        for i in range(1, 5):
-            Phase.objects.filter(phase_number=i).update(start=timezone.now() + timedelta(days=i - 4),
-                                                        end=timezone.now() + timedelta(days=i - 3))
-        self.assertEqual(Phase.current_phase().phase_number, 4)
-
-        response = self.client.get(reverse("participation:calendar"))
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.get(reverse("participation:update_phase", args=(4,)))
-        self.assertEqual(response.status_code, 403)
-
-        response = self.client.post(reverse("participation:update_phase", args=(4,)), data=dict(
-            start=timezone.now(),
-            end=timezone.now() + timedelta(days=3),
-        ))
-        self.assertEqual(response.status_code, 403)
-
-        self.client.force_login(self.superuser)
-        response = self.client.get(reverse("participation:update_phase", args=(4,)))
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.post(reverse("participation:update_phase", args=(4,)), data=dict(
-            start=timezone.now(),
-            end=timezone.now() + timedelta(days=3),
-        ))
-        self.assertRedirects(response, reverse("participation:calendar"), 302, 200)
-        fourth_phase = Phase.objects.get(phase_number=4)
-        self.assertEqual((fourth_phase.end - fourth_phase.start).days, 3)
-
-        # First phase must be before the other phases
-        response = self.client.post(reverse("participation:update_phase", args=(1,)), data=dict(
-            start=timezone.now() + timedelta(days=8),
-            end=timezone.now() + timedelta(days=9),
-        ))
-        self.assertEqual(response.status_code, 200)
-
-        # Fourth phase must be after the other phases
-        response = self.client.post(reverse("participation:update_phase", args=(4,)), data=dict(
-            start=timezone.now() - timedelta(days=9),
-            end=timezone.now() - timedelta(days=8),
-        ))
-        self.assertEqual(response.status_code, 200)
-
-        # End must be after start
-        response = self.client.post(reverse("participation:update_phase", args=(4,)), data=dict(
-            start=timezone.now() + timedelta(days=3),
-            end=timezone.now(),
-        ))
-        self.assertEqual(response.status_code, 200)
-
-        # Unauthenticated user can't update the calendar
-        self.client.logout()
-        response = self.client.get(reverse("participation:calendar"))
-        self.assertEqual(response.status_code, 200)
-        response = self.client.get(reverse("participation:update_phase", args=(2,)))
-        self.assertRedirects(response, reverse("login") + "?next=" +
-                             reverse("participation:update_phase", args=(2,)), 302, 200)
-
     def test_forbidden_access(self):
         """
         Load personal pages and ensure that these are protected.
@@ -679,20 +435,6 @@ class TestStudentParticipation(TestCase):
         self.assertEqual(resp.status_code, 403)
         resp = self.client.get(reverse("participation:participation_detail", args=(self.second_team.pk,)))
         self.assertEqual(resp.status_code, 403)
-        resp = self.client.get(reverse("participation:upload_video",
-                                       args=(self.second_team.participation.solution.pk,)))
-        self.assertEqual(resp.status_code, 403)
-        resp = self.client.get(reverse("participation:upload_video",
-                                       args=(self.second_team.participation.synthesis.pk,)))
-        self.assertEqual(resp.status_code, 403)
-        resp = self.client.get(reverse("participation:add_question", args=(self.second_team.pk,)))
-        self.assertEqual(resp.status_code, 403)
-        question = Question.objects.create(participation=self.second_team.participation,
-                                           question=self.question.question)
-        resp = self.client.get(reverse("participation:update_question", args=(question.pk,)))
-        self.assertEqual(resp.status_code, 403)
-        resp = self.client.get(reverse("participation:delete_question", args=(question.pk,)))
-        self.assertEqual(resp.status_code, 403)
 
     def test_cover_matrix(self):
         """
@@ -707,7 +449,6 @@ class TestStudentParticipation(TestCase):
         self.team.participation.save()
 
         call_command('fix_matrix_channels')
-        call_command('setup_third_phase')
 
 
 class TestAdmin(TestCase):
@@ -765,50 +506,6 @@ class TestAdmin(TestCase):
         self.assertEqual(response.status_code, 200)
         self.assertTrue(response.context["object_list"])
 
-    def test_set_received_video(self):
-        """
-        Try to define the received video of a participation.
-        """
-        response = self.client.get(reverse("participation:participation_receive_participation",
-                                           args=(self.team1.participation.pk,)))
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.post(reverse("participation:participation_receive_participation",
-                                            args=(self.team1.participation.pk,)),
-                                    data=dict(received_participation=self.team2.participation.pk))
-        self.assertRedirects(response, reverse("participation:participation_detail",
-                                               args=(self.team1.participation.pk,)), 302, 200)
-
-        response = self.client.get(reverse("participation:participation_receive_participation",
-                                           args=(self.team1.participation.pk,)))
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.post(reverse("participation:participation_send_participation",
-                                            args=(self.team1.participation.pk,)),
-                                    data=dict(sent_participation=self.team3.participation.pk))
-        self.assertRedirects(response, reverse("participation:participation_detail",
-                                               args=(self.team1.participation.pk,)), 302, 200)
-
-        self.team1.participation.refresh_from_db()
-        self.team2.participation.refresh_from_db()
-        self.team3.participation.refresh_from_db()
-
-        self.assertEqual(self.team1.participation.received_participation.pk, self.team2.participation.pk)
-        self.assertEqual(self.team1.participation.sent_participation.pk, self.team3.participation.pk)
-        self.assertEqual(self.team2.participation.sent_participation.pk, self.team1.participation.pk)
-        self.assertEqual(self.team3.participation.received_participation.pk, self.team1.participation.pk)
-
-        # The other team didn't work on the same problem
-        response = self.client.post(reverse("participation:participation_receive_participation",
-                                            args=(self.team1.participation.pk,)),
-                                    data=dict(received_participation=self.other_team.participation.pk))
-        self.assertEqual(response.status_code, 200)
-
-        response = self.client.post(reverse("participation:participation_send_participation",
-                                            args=(self.team1.participation.pk,)),
-                                    data=dict(sent_participation=self.other_team.participation.pk))
-        self.assertEqual(response.status_code, 200)
-
     def test_create_team_forbidden(self):
         """
         Ensure that an admin can't create a team.
@@ -816,7 +513,6 @@ class TestAdmin(TestCase):
         response = self.client.post(reverse("participation:create_team"), data=dict(
             name="Test team",
             trigram="TES",
-            grant_animath_access_videos=False,
         ))
         self.assertEqual(response.status_code, 403)
 
diff --git a/apps/participation/urls.py b/apps/participation/urls.py
index 7e6d3fe..4bb1766 100644
--- a/apps/participation/urls.py
+++ b/apps/participation/urls.py
@@ -4,10 +4,9 @@
 from django.urls import path
 from django.views.generic import TemplateView
 
-from .views import CalendarView, CreateQuestionView, CreateTeamView, DeleteQuestionView, JoinTeamView, \
-    MyParticipationDetailView, MyTeamDetailView, ParticipationDetailView, PhaseUpdateView, \
-    SetParticipationReceiveParticipationView, SetParticipationSendParticipationView, TeamAuthorizationsView, \
-    TeamDetailView, TeamLeaveView, TeamListView, TeamUpdateView, UpdateQuestionView, UploadVideoView
+from .views import CreateTeamView, JoinTeamView, \
+    MyParticipationDetailView, MyTeamDetailView, ParticipationDetailView, TeamAuthorizationsView, \
+    TeamDetailView, TeamLeaveView, TeamListView, TeamUpdateView
 
 
 app_name = "participation"
@@ -23,15 +22,5 @@ urlpatterns = [
     path("team/leave/", TeamLeaveView.as_view(), name="team_leave"),
     path("detail/", MyParticipationDetailView.as_view(), name="my_participation_detail"),
     path("detail/<int:pk>/", ParticipationDetailView.as_view(), name="participation_detail"),
-    path("detail/upload-video/<int:pk>/", UploadVideoView.as_view(), name="upload_video"),
-    path("detail/<int:pk>/receive-participation/", SetParticipationReceiveParticipationView.as_view(),
-         name="participation_receive_participation"),
-    path("detail/<int:pk>/send-participation/", SetParticipationSendParticipationView.as_view(),
-         name="participation_send_participation"),
-    path("detail/<int:pk>/add-question/", CreateQuestionView.as_view(), name="add_question"),
-    path("update-question/<int:pk>/", UpdateQuestionView.as_view(), name="update_question"),
-    path("delete-question/<int:pk>/", DeleteQuestionView.as_view(), name="delete_question"),
-    path("calendar/", CalendarView.as_view(), name="calendar"),
-    path("calendar/<int:pk>/", PhaseUpdateView.as_view(), name="update_phase"),
     path("chat/", TemplateView.as_view(template_name="participation/chat.html"), name="chat")
 ]
diff --git a/apps/participation/views.py b/apps/participation/views.py
index dcb15f2..efd923c 100644
--- a/apps/participation/views.py
+++ b/apps/participation/views.py
@@ -17,17 +17,15 @@ from django.shortcuts import redirect
 from django.template.loader import render_to_string
 from django.urls import reverse_lazy
 from django.utils.translation import gettext_lazy as _
-from django.views.generic import CreateView, DeleteView, DetailView, FormView, RedirectView, TemplateView, UpdateView
+from django.views.generic import CreateView, DetailView, FormView, RedirectView, TemplateView, UpdateView
 from django.views.generic.edit import FormMixin, ProcessFormView
 from django_tables2 import SingleTableView
 from magic import Magic
 from registration.models import AdminRegistration
 
-from .forms import JoinTeamForm, ParticipationForm, PhaseForm, QuestionForm, \
-    ReceiveParticipationForm, RequestValidationForm, SendParticipationForm, TeamForm, \
-    UploadVideoForm, ValidateParticipationForm
-from .models import Participation, Phase, Question, Team, Video
-from .tables import CalendarTable, TeamTable
+from .forms import JoinTeamForm, ParticipationForm, RequestValidationForm, TeamForm, ValidateParticipationForm
+from .models import Participation, Team
+from .tables import TeamTable
 
 
 class CreateTeamView(LoginRequiredMixin, CreateView):
@@ -177,8 +175,7 @@ class TeamDetailView(LoginRequiredMixin, FormMixin, ProcessFormView, DetailView)
         # and confirmed their email address
         context["can_validate"] = team.students.count() >= 3 and \
             all(r.email_confirmed for r in team.students.all()) and \
-            all(r.photo_authorization for r in team.students.all()) and \
-            team.participation.problem
+            all(r.photo_authorization for r in team.students.all())
 
         return context
 
@@ -243,8 +240,6 @@ class TeamDetailView(LoginRequiredMixin, FormMixin, ProcessFormView, DetailView)
 
             get_sympa_client().subscribe(self.object.email, "equipes", False, f"Equipe {self.object.name}")
             get_sympa_client().unsubscribe(self.object.email, "equipes-non-valides", False)
-            get_sympa_client().subscribe(self.object.email, f"probleme-{self.object.participation.problem}", False,
-                                         f"Equipe {self.object.name}")
         elif "invalidate" in self.request.POST:
             self.object.participation.valid = None
             self.object.participation.save()
@@ -318,7 +313,7 @@ class TeamAuthorizationsView(LoginRequiredMixin, DetailView):
         team = self.get_object()
         output = BytesIO()
         zf = ZipFile(output, "w")
-        for student in team.students.all():
+        for student in team.participants.all():
             magic = Magic(mime=True)
             mime_type = magic.from_file("media/" + student.photo_authorization.name)
             ext = mime_type.split("/")[1].replace("jpeg", "jpg")
@@ -402,145 +397,5 @@ class ParticipationDetailView(LoginRequiredMixin, DetailView):
         context = super().get_context_data(**kwargs)
 
         context["title"] = lambda: _("Participation of team {trigram}").format(trigram=self.object.team.trigram)
-        context["current_phase"] = Phase.current_phase()
 
         return context
-
-
-class SetParticipationReceiveParticipationView(AdminMixin, UpdateView):
-    """
-    Define the solution that a team will receive.
-    """
-    model = Participation
-    form_class = ReceiveParticipationForm
-    template_name = "participation/receive_participation_form.html"
-
-    def get_success_url(self):
-        return reverse_lazy("participation:participation_detail", args=(self.kwargs["pk"],))
-
-
-class SetParticipationSendParticipationView(AdminMixin, UpdateView):
-    """
-    Define the team where the solution will be sent.
-    """
-    model = Participation
-    form_class = SendParticipationForm
-    template_name = "participation/send_participation_form.html"
-
-    def get_success_url(self):
-        return reverse_lazy("participation:participation_detail", args=(self.kwargs["pk"],))
-
-
-class CreateQuestionView(LoginRequiredMixin, CreateView):
-    """
-    Ask a question to another team.
-    """
-    participation: Participation
-    model = Question
-    form_class = QuestionForm
-    extra_context = dict(title=_("Create question"))
-
-    def dispatch(self, request, *args, **kwargs):
-        if not request.user.is_authenticated:
-            return self.handle_no_permission()
-        self.participation = Participation.objects.get(pk=kwargs["pk"])
-        if request.user.registration.is_admin or \
-                request.user.registration.participates and \
-                self.participation.valid and \
-                request.user.registration.team.pk == self.participation.team_id:
-            return super().dispatch(request, *args, **kwargs)
-        raise PermissionDenied
-
-    def form_valid(self, form):
-        form.instance.participation = self.participation
-        return super().form_valid(form)
-
-    def get_success_url(self):
-        return reverse_lazy("participation:participation_detail", args=(self.participation.pk,))
-
-
-class UpdateQuestionView(LoginRequiredMixin, UpdateView):
-    """
-    Edit a question.
-    """
-    model = Question
-    form_class = QuestionForm
-
-    def dispatch(self, request, *args, **kwargs):
-        self.object = self.get_object()
-        if not request.user.is_authenticated:
-            return self.handle_no_permission()
-        if request.user.registration.is_admin or \
-                request.user.registration.participates and \
-                self.object.participation.valid and \
-                request.user.registration.team.pk == self.object.participation.team_id:
-            return super().dispatch(request, *args, **kwargs)
-        raise PermissionDenied
-
-    def get_success_url(self):
-        return reverse_lazy("participation:participation_detail", args=(self.object.participation.pk,))
-
-
-class DeleteQuestionView(LoginRequiredMixin, DeleteView):
-    """
-    Remove a question.
-    """
-    model = Question
-    extra_context = dict(title=_("Delete question"))
-
-    def dispatch(self, request, *args, **kwargs):
-        self.object = self.get_object()
-        if not request.user.is_authenticated:
-            return self.handle_no_permission()
-        if request.user.registration.is_admin or \
-                request.user.registration.participates and \
-                self.object.participation.valid and \
-                request.user.registration.team.pk == self.object.participation.team_id:
-            return super().dispatch(request, *args, **kwargs)
-        raise PermissionDenied
-
-    def get_success_url(self):
-        return reverse_lazy("participation:participation_detail", args=(self.object.participation.pk,))
-
-
-class UploadVideoView(LoginRequiredMixin, UpdateView):
-    """
-    Upload a solution video for a team.
-    """
-    model = Video
-    form_class = UploadVideoForm
-    template_name = "participation/upload_video.html"
-    extra_context = dict(title=_("Upload video"))
-
-    def dispatch(self, request, *args, **kwargs):
-        user = request.user
-        if not user.is_authenticated:
-            return super().handle_no_permission()
-        if user.registration.is_admin or user.registration.participates \
-                and user.registration.team.participation.pk == self.get_object().participation.pk:
-            return super().dispatch(request, *args, **kwargs)
-        raise PermissionDenied
-
-    def get_success_url(self):
-        return reverse_lazy("participation:participation_detail", args=(self.object.participation.pk,))
-
-
-class CalendarView(SingleTableView):
-    """
-    Display the calendar of the action.
-    """
-    table_class = CalendarTable
-    model = Phase
-    extra_context = dict(title=_("Calendar"))
-
-
-class PhaseUpdateView(AdminMixin, UpdateView):
-    """
-    Update a phase of the calendar, if we have sufficient rights.
-    """
-    model = Phase
-    form_class = PhaseForm
-    extra_context = dict(title=_("Calendar update"))
-
-    def get_success_url(self):
-        return reverse_lazy("participation:calendar")
diff --git a/apps/registration/migrations/0001_initial.py b/apps/registration/migrations/0001_initial.py
deleted file mode 100644
index 37baf8d..0000000
--- a/apps/registration/migrations/0001_initial.py
+++ /dev/null
@@ -1,74 +0,0 @@
-# Generated by Django 3.1.3 on 2020-11-04 12:05
-
-from django.conf import settings
-from django.db import migrations, models
-import django.db.models.deletion
-import registration.models
-
-
-class Migration(migrations.Migration):
-
-    initial = True
-
-    dependencies = [
-        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
-        ('participation', '0001_initial'),
-        ('contenttypes', '0002_remove_content_type_name'),
-    ]
-
-    operations = [
-        migrations.CreateModel(
-            name='Registration',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('give_contact_to_animath', models.BooleanField(default=False, verbose_name='Grant Animath to contact me in the future about other actions')),
-                ('email_confirmed', models.BooleanField(default=False, verbose_name='email confirmed')),
-                ('polymorphic_ctype', models.ForeignKey(editable=False, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='polymorphic_registration.registration_set+', to='contenttypes.contenttype')),
-                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL, verbose_name='user')),
-            ],
-            options={
-                'verbose_name': 'registration',
-                'verbose_name_plural': 'registrations',
-            },
-        ),
-        migrations.CreateModel(
-            name='AdminRegistration',
-            fields=[
-                ('registration_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='registration.registration')),
-                ('role', models.TextField(verbose_name='role of the administrator')),
-            ],
-            options={
-                'verbose_name': 'admin registration',
-                'verbose_name_plural': 'admin registrations',
-            },
-            bases=('registration.registration',),
-        ),
-        migrations.CreateModel(
-            name='StudentRegistration',
-            fields=[
-                ('registration_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='registration.registration')),
-                ('student_class', models.IntegerField(choices=[(12, '12th grade'), (11, '11th grade'), (10, '10th grade or lower')], verbose_name='student class')),
-                ('school', models.CharField(max_length=255, verbose_name='school')),
-                ('photo_authorization', models.FileField(blank=True, default='', upload_to=registration.models.get_random_filename, verbose_name='photo authorization')),
-                ('team', models.ForeignKey(default=None, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='students', to='participation.team', verbose_name='team')),
-            ],
-            options={
-                'verbose_name': 'student registration',
-                'verbose_name_plural': 'student registrations',
-            },
-            bases=('registration.registration',),
-        ),
-        migrations.CreateModel(
-            name='CoachRegistration',
-            fields=[
-                ('registration_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='registration.registration')),
-                ('professional_activity', models.TextField(verbose_name='professional activity')),
-                ('team', models.ForeignKey(default=None, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='coachs', to='participation.team', verbose_name='team')),
-            ],
-            options={
-                'verbose_name': 'coach registration',
-                'verbose_name_plural': 'coach registrations',
-            },
-            bases=('registration.registration',),
-        ),
-    ]
diff --git a/apps/registration/models.py b/apps/registration/models.py
index 536befc..00ded2f 100644
--- a/apps/registration/models.py
+++ b/apps/registration/models.py
@@ -129,11 +129,11 @@ class ParticipantRegistration(Registration):
     )
 
     @property
-    def type(self):
+    def type(self):  # pragma: no cover
         raise NotImplementedError
 
     @property
-    def form_class(self):
+    def form_class(self):  # pragma: no cover
         raise NotImplementedError
 
 
diff --git a/apps/registration/templatetags/search_results_tables.py b/apps/registration/templatetags/search_results_tables.py
index f80a2ac..795bd75 100644
--- a/apps/registration/templatetags/search_results_tables.py
+++ b/apps/registration/templatetags/search_results_tables.py
@@ -3,7 +3,7 @@
 
 from django import template
 from django_tables2 import Table
-from participation.models import Participation, Team, Video
+from participation.models import Participation, Team
 from participation.tables import ParticipationTable, TeamTable, VideoTable
 
 from ..models import Registration
@@ -19,8 +19,6 @@ def search_table(results):
         table_class = TeamTable
     elif issubclass(model_class, Participation):
         table_class = ParticipationTable
-    elif issubclass(model_class, Video):
-        table_class = VideoTable
     return table_class([result.object for result in results], prefix=model_class._meta.model_name)
 
 
diff --git a/apps/registration/tests.py b/apps/registration/tests.py
index dc3e93c..b4384e3 100644
--- a/apps/registration/tests.py
+++ b/apps/registration/tests.py
@@ -1,7 +1,6 @@
 # Copyright (C) 2020 by Animath
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from datetime import timedelta
 import os
 
 from tfjm.tokens import email_validation_token
@@ -12,10 +11,9 @@ from django.core.files.uploadedfile import SimpleUploadedFile
 from django.core.management import call_command
 from django.test import TestCase
 from django.urls import reverse
-from django.utils import timezone
 from django.utils.encoding import force_bytes
 from django.utils.http import urlsafe_base64_encode
-from participation.models import Phase, Team
+from participation.models import Team
 
 from .models import AdminRegistration, CoachRegistration, StudentRegistration
 
@@ -54,8 +52,6 @@ class TestIndexPage(TestCase):
         response = self.client.get(reverse("participation:participation_detail", args=(1,)))
         self.assertRedirects(response, reverse("login") + "?next="
                              + reverse("participation:participation_detail", args=(1,)))
-        response = self.client.get(reverse("participation:upload_video", args=(1,)))
-        self.assertRedirects(response, reverse("login") + "?next=" + reverse("participation:upload_video", args=(1,)))
 
 
 class TestRegistration(TestCase):
@@ -110,13 +106,6 @@ class TestRegistration(TestCase):
         """
         Ensure that the signup form is working successfully.
         """
-        # After first phase
-        response = self.client.get(reverse("registration:signup"))
-        self.assertEqual(response.status_code, 403)
-
-        Phase.objects.filter(phase_number__gte=2).update(start=timezone.now() + timedelta(days=1),
-                                                         end=timezone.now() + timedelta(days=2))
-
         response = self.client.get(reverse("registration:signup"))
         self.assertEqual(response.status_code, 200)
 
@@ -300,7 +289,7 @@ class TestRegistration(TestCase):
 
         response = self.client.post(reverse("registration:upload_user_photo_authorization",
                                             args=(self.student.registration.pk,)), data=dict(
-            photo_authorization=open("tfjm/static/Autorisation de droit à l'image - majeur.pdf", "rb"),
+            photo_authorization=open("tfjm/static/Fiche_sanitaire.pdf", "rb"),
         ))
         self.assertRedirects(response, reverse("registration:user_detail", args=(self.student.pk,)), 302, 200)
 
@@ -323,7 +312,7 @@ class TestRegistration(TestCase):
         old_authoratization = self.student.registration.photo_authorization.path
         response = self.client.post(reverse("registration:upload_user_photo_authorization",
                                             args=(self.student.registration.pk,)), data=dict(
-            photo_authorization=open("tfjm/static/Autorisation de droit à l'image - majeur.pdf", "rb"),
+            photo_authorization=open("tfjm/static/Fiche_sanitaire.pdf", "rb"),
         ))
         self.assertRedirects(response, reverse("registration:user_detail", args=(self.student.pk,)), 302, 200)
         self.assertFalse(os.path.isfile(old_authoratization))
diff --git a/apps/registration/views.py b/apps/registration/views.py
index aa96f92..fa5d476 100644
--- a/apps/registration/views.py
+++ b/apps/registration/views.py
@@ -18,7 +18,6 @@ from django.utils.translation import gettext_lazy as _
 from django.views.generic import CreateView, DetailView, RedirectView, TemplateView, UpdateView, View
 from django_tables2 import SingleTableView
 from magic import Magic
-from participation.models import Phase
 
 from .forms import CoachRegistrationForm, PhotoAuthorizationForm, SignupForm, StudentRegistrationForm, UserForm
 from .models import Registration, StudentRegistration
@@ -34,15 +33,6 @@ class SignupView(CreateView):
     template_name = "registration/signup.html"
     extra_context = dict(title=_("Sign up"))
 
-    def dispatch(self, request, *args, **kwargs):
-        """
-        The signup view is available only during the first phase.
-        """
-        current_phase = Phase.current_phase()
-        if not current_phase or current_phase.phase_number >= 2:
-            raise PermissionDenied(_("You can't register now."))
-        return super().dispatch(request, *args, **kwargs)
-
     def get_context_data(self, **kwargs):
         context = super().get_context_data()
 
diff --git a/tfjm/static/Fiche synthèse.pdf b/tfjm/static/Fiche_synthèse.pdf
similarity index 100%
rename from tfjm/static/Fiche synthèse.pdf
rename to tfjm/static/Fiche_synthèse.pdf
diff --git a/tfjm/static/Fiche synthèse.tex b/tfjm/static/Fiche_synthèse.tex
similarity index 100%
rename from tfjm/static/Fiche synthèse.tex
rename to tfjm/static/Fiche_synthèse.tex
diff --git a/tfjm/templates/base.html b/tfjm/templates/base.html
index 994e545..3407f74 100644
--- a/tfjm/templates/base.html
+++ b/tfjm/templates/base.html
@@ -1,4 +1,4 @@
-{% load static i18n static calendar %}
+{% load static i18n static %}
 
 <!DOCTYPE html>
 {% get_current_language as LANGUAGE_CODE %}{% get_current_language_bidi as LANGUAGE_BIDI %}
@@ -63,13 +63,6 @@
                 <li class="nav-item active">
                     <a href="{% url "index" %}" class="nav-link"><i class="fas fa-home"></i> {% trans "Home" %}</a>
                 </li>
-                <li class="nav-item active">
-                    {% if user.registration.is_admin %}
-                        <a href="{% url "participation:calendar" %}" class="nav-link"><i class="fas fa-calendar"></i> {% trans "Calendar" %}</a>
-                    {% else %}
-                        <a href="#" class="nav-link" data-toggle="modal" data-target="#calendarModal"><i class="fas fa-calendar"></i> {% trans "Calendar" %}</a>
-                    {% endif %}
-                </li>
                 {% if user.is_authenticated and user.registration.is_admin %}
                     <li class="nav-item active">
                         <a href="{% url "registration:user_list" %}" class="nav-link"><i class="fas fa-user"></i> {% trans "Users" %}</a>
@@ -129,11 +122,9 @@
                     </li>
                 {% endif %}
                 {% if not user.is_authenticated %}
-                    {% if 1|current_phase %}
-                        <li class="nav-item active">
-                            <a class="nav-link" href="{% url "registration:signup" %}"><i class="fas fa-user-plus"></i> {% trans "Register" %}</a>
-                        </li>
-                    {% endif %}
+                    <li class="nav-item active">
+                        <a class="nav-link" href="{% url "registration:signup" %}"><i class="fas fa-user-plus"></i> {% trans "Register" %}</a>
+                    </li>
                     <li class="nav-item active">
                         <a class="nav-link" href="#" data-toggle="modal" data-target="#loginModal">
                             <i class="fas fa-sign-in-alt"></i> {% trans "Log in" %}
@@ -228,9 +219,6 @@
 </footer>
 
 
-{% trans "Calendar" as modal_title %}
-{% include "base_modal.html" with modal_id="calendar" modal_additional_class="modal-lg" %}
-
 {% if user.is_authenticated %}
     {% trans "All teams" as modal_title %}
     {% include "base_modal.html" with modal_id="teams" modal_additional_class="modal-lg" %}
@@ -259,11 +247,6 @@
     $(".invalid-feedback").addClass("d-block");
 
     $(document).ready(function () {
-        $('a[data-target="#calendarModal"]').click(function() {
-            let modalBody = $("#calendarModal div.modal-body");
-            if (!modalBody.html().trim())
-                modalBody.load("{% url "participation:calendar" %} #form-content")
-        });
         {% if user.is_authenticated and user.registration.is_admin %}
             $('a[data-target="#teamsModal"]').click(function() {
                 let modalBody = $("#teamsModal div.modal-body");
diff --git a/tfjm/views.py b/tfjm/views.py
index c858a73..76a43df 100644
--- a/tfjm/views.py
+++ b/tfjm/views.py
@@ -8,8 +8,6 @@ from haystack.generic_views import SearchView
 
 class AdminMixin(LoginRequiredMixin):
     def dispatch(self, request, *args, **kwargs):
-        if not request.user.is_authenticated:
-            return self.handle_no_permission()
         if not request.user.registration.is_admin:
             raise PermissionDenied
         return super().dispatch(request, *args, **kwargs)
diff --git a/tfjm/whoosh_index/MAIN_3c7ed6y4sljdfo5s.seg b/tfjm/whoosh_index/MAIN_3c7ed6y4sljdfo5s.seg
deleted file mode 100644
index 032cf27..0000000
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diff --git a/tfjm/whoosh_index/_MAIN_11.toc b/tfjm/whoosh_index/_MAIN_11.toc
deleted file mode 100644
index 1494dfd..0000000
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