Leaderboard Not Found (Game Centre)

Hi,

I have been working on adding Game Centre to my recently released iOS game. I have simply copied the scripts from the unity Social Platform API that allows game centre leaderboards. Despit I have created a leaderboard with Apple through iTunes Connect i seem to receive the error message Leaderboard Not Found. If anyone knows why t$$anonymous$$s is it would be appreciated if you could let me know.

Many Thanks,

Tommy Eaves