Bugs during the sand empire event

Hi, I’ve been experiencing a bug during one of the level of the quest

.The game freezed and I couldn’t continue. I lost the energy and also the bonus of the level although I would have won. I tried to attach a photo of my screen during the fight.Hope you can see it. Please do something.
I want to mention that it happened the same thing during the previous levels but somehow the game still worked and I could finish them.
Thank you

3 posts were merged into an existing topic: Nasty glitch