Shaun_Max Players are complaining that their scores are not getting registered in the leaderboard.
I haven't heard that before! My integration tests also run through without issues.
What could be happening here is that the players don't know that only their top score shows up in the leaderboard. If a player has made a score of, say, 1000, and then submits another with the value of 999, only the first will show up. That's also how GameCenter leaderboards do it — to avoid having players spam the board.
Shaun_Max Also, I have players complaining that the leaderboard got reset twice?
Do you have any time frame when this happened? Then I could check if there's anything suspicious in our logs. I haven't heard about such a problem in the last few years, though (but you never know, of course).