Challenges with challenges

This is a really awesome game but it needs some polishing up. The challenges glitch. Example: I got way over 2,500 nuts and the percentage kept fluctuating. It was 4% then 1% then 99% and then 11%! And when I flew 2000 m without collecting a nut, the game didnt recognize that is completed. I would appreciate a revelation to this problem. Thank you.
Caitlin Drouin

CaityDroDro400 about Going Nuts, v1.1