Hi, Finally my game is available on the iOS store. However, the high score didn't show up in the Game Center. All high score show up as 0. What should I do to make the high score working? The game and high score are working fine in Android. You can download and test the game with your devices: https://itunes.apple.com/vn/app/endless-spaceship/id1437873411?mt=8 Best regards, Kevin