Aplogies for the delayed response.
Could you please let us know on which Appwarp server you are connecting? It will help us to provide better support to you from our end.
Also, to unsubscribe the ghost user from the lobby, please set the kick out time in AppHQ under AppWarp app configuration under App setting. If you sets the kick-out time as 5 sec then if the user is idle for continueous 5 sec, server will automatically disconnect that user.
In the case if you have any other concern please let us know. We will be happy to help you.