game center leaderboard works in sandbox but not release

Question

in sandbox mode leaderboard show up normally, but after it is released via app store, in the game center dashboard, it shows "no leaderboard", and i'm sure at least 3 players had submitted scores.

PS: i didn't wrapper the category with 'com.xxx.xxx', is it ok? cause it works in sandbox.

GKScore *uploader = [[[GKScore alloc] initWithCategory:@"board"] autorelease];

Answer 1

Did you submit your leaderboards/achievements in iTunesConnect? When you submit your app to the store you also have to select which leaderboards and/or achievements you want to submit with the release of your app. Check your app in iTunesConnect and see if your leaderboards are submitted.