When I go to game center it says im loged out, no problem, but when i did it says wrong apple ID or password.. What is this?! I always thought to use my nickname for gameCenter and now i can't log in! Help please!!
Go to Appleid.apple.com, then go to manage your account and try to login. If it wont let you go to reset your password and try login again if it works that time go back to the game center and try using your apple id there with the new password.