Latest Version is horrible!

Dont know what you have done, but this latest update is just terrible. I cannot connect with friends because it tells me they havent upgraded, but I know they have. The friends I can play with, we cannot send invitations to, to play multiple games. We are all on the point of deleting this app forever unless it is fixed soon!

Fi Stevens about Numfeud - Rummy, Okey, Sudoku, v5.0.1