So, this isn't something that would have been fixed in the maintenance, but looks like missing assets. Could you try to delete and reinstall the game, and make sure that you're on a strong wifi connection when you download the game files?
I’ve reinstalled the game and redid all my masteries thinking something got messed up. My WiFi is strong and have good internet. This is something that pops up from time to time. Even if I’m just using cellular. But yes when I send these reports to support they tell me exactly the same thing. Every time. I got so frustrated with game play I had to quit boss challenge. After blowing through all my resources and then some. This seems to really be affecting iPhone 7/7+ users on many levels. But thank you mike.
Comments
So, this isn't something that would have been fixed in the maintenance, but looks like missing assets. Could you try to delete and reinstall the game, and make sure that you're on a strong wifi connection when you download the game files?