Keeps closing

FIX THIS GAME OR REFUND THE HUNDREDS OF DOLLARS I HAVE SPENT PURCHASING GEMS FOR MY GRANDSON. THIS IS SUCH A R OFF!!!! I downloaded this for my grandson and he really liked it but ever since I purchased a ton of gems for him to use it keeps closing on him every time he tries to play. Very frustrating for a five year old and me. So now Ive spent actual money for nothing. His user name is Jamespatric. Please fix whatever is wrong or return the money Ive spent for gems for him to play.

Sues Eden about School of Dragons