Game Center blank white screen - can't play games
I need help. I cannot play my games anymore because there is something wrong with Game Center.
This is what I get when I open Game Center.
http://i.imgur.com/SwbOdEj.png
This is my Game Center settings screen.
http://i.imgur.com/g6foSll.png
(spinning forever)
I cannot reinstall GC because it's a native iOS app. I've tried closing the app itself, along with the Settings app and restarting my iPhone several times, no dice.
Any advice?
iPhone 4S, iOS 7.0.2