Crash, crash and crash again. Great game up until the last few days. No way of getting bonus points watching adverts. Any attempt to watch ads crashes the game, so you can't even progress through the levels. Intermittent problem until last few days. My phone is up to date, everything is as recommended to play this game. Get no help when contacting creators, so it's a 'don't waste your time and effort on it' from me.