Having trouble opening game

I am using an HTC one s phone and up until a couple days ago the app opened fine. But now it gets locked up at the opening scene and will go as far as playing the music and everything. Then it just lags... I uninstalled and reinstalled and it worked again. But when I tried to go back into the app a little later it did it again. Be warned: I had to start ALL over when I reinstalled. I checked my memory and that said I had plenty. Is anyone else experiencing this?? It's so frustrating