Why won't my app sign in to the game center?

[iMore Question]

Why won't my app sign in to the game centre

So basically I was playing this game called zig zag and I hate to delete it for storage and I kept it in the game centre but after I downloaded it again it didn't sign in to the game centre

 

[RogMoore]

Re: Why won't my app sign in to the game centre

Try to re-install it, it sometimes solves the problem.

 

[Ledsteplin]

Re: Why won't my app sign in to the game centre

So when you go to the game center app, and tap games. Then look under iOS Games. Do you see Zig Zag listed there?