Update to google play blocked

Unity Engine
1

Hi, i have an urgent problem with my app.
I have got this message:
Issue: Violation of Inappropriate Ads policy.

I guess it has any connection to my banner spot.
When i click on the back button, i need to swipe my finger up to click.
For example:

3476757--276361--prob2.png
3476757--276363--prob1.png

How can i make it like this game:

3476757--276362--prob3.png

2

My guess is you’re serving adult ads in an app targeting kids because here is Google’s “Inappropriate Ads” policy:

3

But in the picture it looks like the banner cover the content.
Not sure what to do.