After the iOS version is updated, enter the game and flash back directly.

Thank you for sharing device info. Can you provide more info on what you mean by "enter the game and flash back directly" ? 

Ideally, you can send error logs to our team so that we can better investigate. Even if you can't get into the game proper, you can tap the very centre top of the screen (even on the launcher) to download error logs. Here's more info on how to collect & send logs: