Greetings Top11.
Here is a simple quick video tutorial, as I promised to Niko
The video contains my explanation about the issue in 'Developer Options' - Android.
The speciffic setting is called "Keep activity when leaving app".
I had a problem watching vids and that setting was my problem. This video have the purpose to help those who might have the same problem, causing the user unable to watch daily ads.
I suggest you to pause it, while watching for better understanding of what am I doing.
I had not enough time to do commentary, because it's made during my working time.
I hope this will help