Leaderboards aren't working in the production version :
Hi, my game went live today, and the leaderboards aren't working in the production version.
I have tested them in the sandbox and they appeared to be fine.
The game center UI loads fine, but no leader board data is shown, only - no challenges.
Make sure that you've attached your leaderboards to the build you currently testing with iTunes Connect.
Delete Test Data on iTunes connect
Can't show leaderboard by it's id
When I am trying to show a specific leaderboard by id, but, the leaderboards page appeared instead.
This is known bug with the IOS9+. Unfortunately, we can do nothing about it, just have to wait until apple fixes it. See the related topics on stackoverflow and apple developer forums.