Hey everyone, we've submitted an update to the game yesterday that'll allow those with Gamecenter issues to open the game, you just have to wait for a 10s timeout after you get to the logo screen. It wasn't a very beautiful solution for us (as we say here in Brazil, we've made a "gambiarra"), but there was no other way to do it since this is not a bug in the game, but on the iOS/Gamecenter itself. It should be live by next Thursday/Friday.
Hey the update was finally released! Now you can open the game even if your Gamecenter is bugged - just update the game and wait for 10s in the Logo Screen, then the game shall start!
Now FREE for the very first (and a limited, obviously) time! Full premium. Very recommended! Thx to devs!