When you run out of moves then watch the ads to gain more moves, why does the game keep freezing?

There were too many changes made to this game. You used to have more than 3 minutes to play and not have to wait 1 to 2 min to win another game. And the bonus of getting an additional 15 min play time ends up being 5 min. I'm very disappointed. There's a lot of games out there that don't do this. Time to start looking for something better.

I just get rid of background apps and it unfreezes.