diff --git a/ntfy/bot.py b/ntfy/bot.py
index a019b02..918b9ab 100644
--- a/ntfy/bot.py
+++ b/ntfy/bot.py
@@ -101,15 +101,14 @@ class NtfyBot(Plugin):
         task = self.tasks.get(topic_id)
         if task and not task.done():
             self.log.debug("Cancelling subscription task for topic %d",
-    async def can_use_command(self, evt: MessageEvent) -> bool:
-        if evt.sender in self.config["admins"]:
-            return True
-        levels = await self.client.get_state_event(evt.room_id, EventType.ROOM_POWER_LEVELS)
-        user_level = levels.get_user_level(evt.sender)
-        if user_level < 50:
-            await evt.reply("You don't have the permission to manage ntfy subscriptions in this room.")
-            return False
-        return True
+                           topic_id)
+            task.cancel()
+        try:
+            await task
+        except asyncio.CancelledError:
+            pass
+        except Exception as exc:
+            self.log.exception("Subscription task errored", exc_info=exc)
 
     @command.new(name=lambda self: self.config["command_prefix"],
                  help="Manage ntfy subscriptions.", require_subcommand=True)