Hi I am trying to add game center to my iphone app. I have done the following steps
1) I have added an app to my itnuesAccount
2) I assigned the Bundle ID as net
Gah! This was driving me crazy. I had done everything right, had all the correct bundleIDs, certificates, etc., my app is already in the app store, but I was still getting this message. (iOS9.x, XCode 7.1)
Turns out that adding a single achievement in iTunesConnect made things work. I suspect I could have added a leaderboard, instead.
Basically, the message can also mean "while your app says it's Game Center capable, it doesn't actually have any GC content" and adding an achievement or leaderboard makes the game "recognized" by GC.