We have fixed the problems with the leaderboard and released a new version. If you have a version below 1.0.5 please update to version 1.0.5 to get the working leaderboard.
We have made some adjustments to the leaderboard as follows.
1.) Amateur and Rookie scores are displayed for 24 hours, after that they are no longer shown. We had to do this due to amount of scores being submitted and the fact that it was impossible to find your own score.
2.) We are currently going to try and show all pro scores submitted during the current month. At the beginning of each calendar month, pro scores will be cleared.
These settings may be adjusted and tweaked further in order to cope with volume and server issues until we find a sweet spot.
Thank you for being patient and understanding while the leaderboard was down. Now go get the update and see if you can top the global charts!