cant even play the game

So I have an iPhone 6 and back on my devices that arent Apple devices, it lets me play it fine. But I just downloaded this yesterday and I clicked on the app and it starts loading. But,like 5 seconds into the app opening, the little Game Center icon pops up and then says welcome back and then my name. So every time it opens up during Wipeout2 loading, the game stops and goes back to my home screen.

Taisja about Wipeout 2, v1.0.3