I have my AdSense TAGS in a WordPress Ad Widget called Click Missile Pro. For some reason the Ads disappear on Mobile version or the site. There should be a text unit (in the middle of the post) and 250x250 banner at the bottom. Can anyone check? I am frustrated. The technical support on the AdSense forums is pretty lack luster.
It seems you fixed this.
For anyone else, you have to set the ad size to a mobile available size. If the ad is set to leaderboard 728x90, then it won't display on mobile. Instead, create a mobile specific ad unit, or change the ad size to a mobile-available size, or Responsive, which will size it automatically depending on available space and device.