My phone hasn't been letting me watch any ads lately

A

AC Question

I know that sounds weird, but it is. And you may also be thinking "Well, why would you /want/ to watch ads?" But some benefits or rewards that games give you for watching ads is really worth it. I'm talking about PewDiePie's Tuber Simulator in specific, but I want to clarify that it happens with other apps as well. I also tried watching an ad in PickCrafter to get a crap tonne of free picks and it does the same thing; the apps just exits to my phone's "desktop" or whatever you want to call it and relaunches without giving me my rewards.

Has anyone else been experiencing this problem or know how to fix it?