Hey daemon_tool that looks like it’s a connection issue, so it might help to try some of the troubleshooting steps on this thread: Stuck on loaded screen of game?
If you’re still having an issue, email our support team with your support key here at support+forums@ludia.
these most errors get fixed if you activate air-plane modus of phone/tablet for a few seconds and then put it off again. then you can press “reconnect” in game and it will work
Restart your itnernet connection, turn on/off airplane mode, restart your device. Any of those should be fix it