hi

Ive purchase dthis app for my son - he loves it..but lately upon opening it crashes and after a black screen just returns to the homescreen

This is a bit frustrting seen Ive paid for this game..and now it doesnt function

He plays it on his Sasmung Galaxy J phone

It was running great..no issues..but now this

Ive got no idea as the the workings of these things

Please assist asap!! hes making me mad!!

Regards