A couple of weeks ago I noticed that when I place any piece on the A8 square of the oppossite player, it cannot be moved it any longer. Don't know how to fix it.

On the other side, after playing a game with a player, if I return to the hall, appear a screen with an ad that says "you will return to hall after ths break. An effectively I return but cannot neither challenge another player nor accept the challenge of others. Someone knows how to fix it?

Thanks very much. Bolk