I'm having the same problem...but no one from GLU seems to care about it. They don't respond emails or threads...I'm thinking about deleting the game...it's impossible to play this way.
I'm playing Stardom: The A List, and it's impossible to connect with Facebook or Game Center. I have a task which is "date a Facebook or Game Center friend" and I can`t connect to either of them. Can someone help me???