Board Thread:Game Discussion/@comment-83.132.2.90-20181104205746/@comment-33074252-20181105102911

I also had problems with adds crashing on my old iPad Air (first Generation). That completely stopped after changing to a new iPad Pro. So i'm quite sure it's at least partly hardware-related. Maybe badly programmed adds have some influence, too, but that's nothing you can change.

If updating to iOS 12 seems to help, as some others said, you should try that.