Trouble Using the new rematchWithCompletionHandler method from Game Center

Question

I am making a turnbased game using the gamecenter api. I wanted to make a one press button to rematch players so they don\'t have to go through the gamecenter view controllers a

Answer 1

It only works for me when the two players are Game Center friends.

Answer 2

rematchWithCompletionHandler appears to only work when a match has been correctly ended by all players involved with the match.