I have an app that I am currently working on that is Game center enabled and uses the open source helper class from here: https://github.com/ablfx/ABGameKitHelper. Right now I have everything working fine, but there is a little bug I need your guys help with. I distribute my app to beta testers through the free service Testflight. When the beta testers FIRST get my app and open it Game Center prompts them to make an account, however a lot of them did not, having misunderstood this and now they do not seem to have an option to make an account. When they click on my button for Game Center in the app that should show the standard achievements page, an alert pops up saying "Player is not signed in." On the same note, no matter if they delete the app or restart their phone it will never ask them to make annother account after the first try. So my question is, wether this problem is just a glitch on Game Center part, or is there something wrong with my authentification method that could cause problems even after the release of my app. Thank you for your time and help and if you need more info just let me know.