Board Thread:Game Discussion/@comment-34940683-20190211144013/@comment-29605676-20190211153011

Wiggysan, have you tried resetting the ad ID? This may result in them sending you a different ad.

I have also had the black screen on iOS but it is uncommon and I watch 85 ads a day for 15, as you say it ads (pun intended) up. Other than force quitting, I don't think there is much else you can do.