diff --git a/apps/participation/management/commands/__init__.py b/apps/participation/management/commands/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/apps/participation/management/commands/fix_matrix_channels.py b/apps/participation/management/commands/fix_matrix_channels.py
new file mode 100644
index 0000000..ef48b7d
--- /dev/null
+++ b/apps/participation/management/commands/fix_matrix_channels.py
@@ -0,0 +1,25 @@
+from asgiref.sync import async_to_sync
+from nio import RoomPreset
+
+from corres2math.matrix import Matrix, RoomVisibility
+from django.core.management import BaseCommand
+from registration.models import AdminRegistration
+
+
+class Command(BaseCommand):
+    def handle(self, *args, **options):
+        Matrix.set_display_name("Bot des Correspondances")
+
+        if not async_to_sync(Matrix.resolve_room_alias)("#faq:correspondances-maths.fr"):
+            Matrix.create_room(
+                visibility=RoomVisibility.public,
+                alias="faq",
+                name="FAQ",
+                topic="Posez toutes vos questions ici !",
+                federate=False,
+                preset=RoomPreset.public_chat,
+            )
+
+        for admin in AdminRegistration.objects.all():
+            Matrix.set_room_power_level("#faq:correspondances-maths.fr",
+                                        f"@{admin.matrix_username}:correspondances-maths.fr", 95)
diff --git a/corres2math/matrix.py b/corres2math/matrix.py
index 65fa8a1..ce51207 100644
--- a/corres2math/matrix.py
+++ b/corres2math/matrix.py
@@ -1,9 +1,7 @@
 import os
-from typing import Any, Dict, Optional, Union
 
 from asgiref.sync import async_to_sync
-from nio import AsyncClient, RoomCreateError, RoomCreateResponse, RoomKickResponse, RoomInviteError,\
-    RoomInviteResponse, RoomPreset, RoomResolveAliasResponse, RoomVisibility
+from nio import *
 
 
 class Matrix:
@@ -23,13 +21,21 @@ class Matrix:
                 client.access_token = cls._token
                 return client
 
-        await client.login(password="toto1234", device_name="Plateforme")
+        await client.login(password=os.getenv("SYNAPSE_PASSWORD"), device_name="Plateforme")
         cls._token = client.access_token
         cls._device_id = client.device_id
         with open(".matrix_token", "w") as f:
             f.write(cls._token)
+        with open(".matrix_device", "w") as f:
+            f.write(cls._device_id)
         return client
 
+    @classmethod
+    @async_to_sync
+    async def set_display_name(cls, name: str) -> Union[ProfileSetDisplayNameResponse, ProfileSetDisplayNameError]:
+        client = await cls._get_client()
+        return await client.set_displayname(name)
+
     @classmethod
     @async_to_sync
     async def create_room(
@@ -54,9 +60,11 @@ class Matrix:
             power_level_override)
 
     @classmethod
-    async def resolve_room_alias(cls, room_alias: str) -> str:
+    async def resolve_room_alias(cls, room_alias: str) -> Optional[str]:
         client = await cls._get_client()
         resp: RoomResolveAliasResponse = await client.room_resolve_alias(room_alias)
+        if isinstance(resp, RoomResolveAliasError):
+            return None
         return resp.room_id
 
     @classmethod
@@ -74,3 +82,17 @@ class Matrix:
         if room_id.startswith("#"):
             room_id = await cls.resolve_room_alias(room_id)
         return await client.room_kick(room_id, user_id, reason)
+
+    @classmethod
+    @async_to_sync
+    async def set_room_power_level(cls, room_id: str, user_id: str, power_level: int)\
+            -> Union[RoomPutStateResponse, RoomPutStateError]:
+        client = await cls._get_client()
+        if room_id.startswith("#"):
+            room_id = await cls.resolve_room_alias(room_id)
+        resp = await client.room_get_state_event(room_id, "m.room.power_levels")
+        content = resp.content
+        content["users"][user_id] = power_level
+        print(content)
+        print(resp.state_key)
+        return await client.room_put_state(room_id, "m.room.power_levels", content=content, state_key=resp.state_key)