Game crashes on ipad air and iphone 5s

I love this game, but sadly i have to keep downloading the game again and again on my iphone and ipad air if i want to play the game once. Thats annoying. I might stop playing this if this goes on like this, by now ive downloaded this game like 15-20 times

Anu6666 about Basketball Stars™: Multiplayer, v1.3.0