MacOS GameKit leaderboards fail to load with App "does not support leaderboards" error

Question

I'm attempting to integrate a macOS game with Apple's GameKit SDK using Objective-C. So far I have been able to authenticate the user and load/update achievements, but I have had no success with leaderboards.

When attempting a loadLeaderboardsWithCompletionHandler request, I get this error:

Error Domain=GKErrorDomain Code=3 "The requested operation could not be completed due to an error communicating with the server." UserInfo={GKServerStatusCode=5043, NSLocalizedDescription=The requested operation could not be completed due to an error communicating with the server., NSUnderlyingError=0x600000158960 {Error Domain=GKServerErrorDomain Code=5043 "status = 5043, MyGame does not support leaderboards" UserInfo={GKServerStatusCode=5043, NSLocalizedFailureReason=status = 5043, MyGame does not support leaderboards}}}

When trying

  GKLeaderboard * leaderLoader = [[GKLeaderboard alloc] init];
  leaderLoader.identifier = @"grp.lvl1";
  [leaderLoader loadScoresWithCompletionHandler` ...

The completion handler is never called.

I'm having trouble understanding why Apple's endpoint says my game does not support leaderboards. So far I have:

1. Enabled GameCenter for our app identifier
2. Enabled GameCenter on our app's App Store Connect page (currently in "prepare for submission" state)
3. I've added a leaderboard to our app group via the Features menu in App Store Connect and imported it onto the macOS App Store page

But still nothing. Any ideas?

Answer 1

If your leaderboard is in a group, it seems to break. Mine was working fine until I added it to a group, then it just broke. Removing it started it working again. Be interested to hear if it fixes it for you, could be worth filing a radar.