Game Crash

Game Crashes in two cases for me so far:

First campaign quest “New beggining” if you skip the video - Game Crash
I waited the video and it worked then saved so it’s alright.

Second quest of “New Beggining” When you end your first turn - Game Crash
So I tried alot of ways to pass it and couldnt make it work, so I wondered if I can use instant win cheat on VCMI?

I have Galaxy S4.