Just rebuilt my app as you suggested. I do not use interstitial ads as my users (and myself) find them very annoying and have caused many uninstalls in the past. Now, after rebuild and all ads turned off in settings, full screen interstitial ads showing up every one minute or so! Is this part of the new SDK? who is receiving revenue for these ads?? I am not. I feel like my app - that is about 10 yrs old has been hijacked and ruined! I will not be publishing this latest build to the play store until these ads are removed!