diff --git a/src/matrix-utils.ts b/src/matrix-utils.ts
index 48c51d15..f5025710 100644
--- a/src/matrix-utils.ts
+++ b/src/matrix-utils.ts
@@ -189,6 +189,7 @@ export async function initClient(
   }
 
   await client.initCrypto();
+  client.setGlobalErrorOnUnknownDevices(false);
   await client.startClient();
   await waitForSync(client);
 
diff --git a/src/room/useLoadGroupCall.ts b/src/room/useLoadGroupCall.ts
index 9b300d36..920cb8bc 100644
--- a/src/room/useLoadGroupCall.ts
+++ b/src/room/useLoadGroupCall.ts
@@ -82,10 +82,7 @@ export const useLoadGroupCall = (
           );
         }
       } else {
-        // room IDs we just try to join by their ID, which will not work in the
-        // general case without providing some servers to join via. We could provide
-        // our own server, but in practice that is implicit.
-        room = await client.joinRoom(roomIdOrAlias);
+        room = await client.joinRoom(roomIdOrAlias, { viaServers });
       }
 
       logger.info(