Constant crashing and coins far too expensive

First off let me say when the game wasnt crashing as often I found it to be great. Once you reach level 10 though the game crashes almost every time. Second the coins are far to expensive. I am sure you the developer could triple your profits. If you were to lower your cost of coins. Regardless until you fix the crashing issues I wont be spending a dime. Please focus on getting the game back to functioning properly so that I can consider buying coins to begin with. Thanks

The game play before the above mentioned issues would earn a 5 provided the issues are fixed.

Tedcom about Unmatched Air Traffic Control