Hi Elsa, the game crashes for me too since today. It happened a couple of times now. At first I thought this is my computer, but I saw a growing complaints about this issue too. It's not about the helmets. It may be something wrong with some graphic changes..
I've passed it today also with a lot of boosters and extra 15 moves I've won on wheel. Still King should fix this level, I mean not all people can buy or use boosters in this game.
Looks like they need to change the name of this website to: doesnotcare.king.com since they cannot solve this problem. Oh well, challenge is over, I guess we never know what was going on.