We have been struggling with Disruptive Ads policy for weeks and finally found out what was the problem in our case. We use app open ads which can appear either from the Main Activity onCreate (Splash Screen) or when the app moves to foreground. It turned out that the second one was displaying ads too frequently ie. every time the app moves to foreground. So we have added a simple timer to cap the ad frequency every 5 hours. Setting the cap on Admob doesn't help as the bot uses test sandbox.