Cant Play The Game

Download stops at 256/256 and doesnt proceed. It says there is a connection error but my wifi connection is good. I tried managing my storage and reinstalled the game but nothing works. It has been over a 8 months now and I cant play the game. The game looks great but it is frustrating that I cant play the game. Please fix the problem.

Stefe 19-05 about DRAGON BALL Z DOKKAN BATTLE, v2.13.5