With iOS 9, Beta 4 I entered a sandbox tester Apple ID in the Settings' Game Center Tab.
After doing so, I noticed a very strange behaviour:
a) Settins is freezing, whenever I select the Game Center Tab.
b) Game Center is freezing as well, when opened.
In fact, there's no chance to sign out from Game Center, and no chance to get it to work. The only way is, resetting the copmplete iPad.
Does anybody have a glue, what might be wrong there?
