Ever since my 10s 9.3 upgrade on my I-phone 6, the game center kept asking me to login. I kept pressing cancel and the games would still work fine. Now the game center home screen shows I have 11 games, 5 friends and 8 turns but you press the buttons, it shows no games, no turns, etc. I tried unlocking my apple account online. Got that done, but it's still the same. All my games work except for Letterpress.
iPhone 6, Other OS, ios 9.3 just upgraded