Looks like ads are displaying on one of your hubs, just not on the two adult diaper hubs you've written. My best guess is that AdSense has mistakenly categorized these hubs as ineligible to display their ads, because it thinks they contain adult content.
Try adding more tags relating to bladder control and incontinence, and consider adding some more text content as well. Then, you'll just have to wait for AdSense to re-evaluate.
You can try contacting AdSense about it, but they are often slow to respond.