Hi there!
I don’t see any ad nor empty banner in built and enhanced apk.
I have used Enhance for implementing fixed banners and interstitials.
I have used those simplest options with zero code needed, just by enhancinh apk via Enhance website.
Tried Admob and Airpush, no difference.
I have not added anything to the code to implement ads, because as Enhance says, it is not needed with these choices.
Everything went without errors, etc.
Any clue whats going on?