How to Put Page Level Ads on Blog Blog is valid AMP
<script async="async" custom-element="amp-sticky-ad" src="https://cdn.ampproject.org/v0/amp-sticky-ad-1.0.js"></script>
<amp-sticky-ad layout='nodisplay'> <amp-ad data-ad-client='ca-pub-XXXXXXXXX' data-ad-slot='XXXXXXXXX' height='50' type='adsense' width='320'> </amp-ad> </amp-sticky-ad>
3. Replace ca-pub-xxxxxxx with your AdSense publisher code. And XXXXXXX with the ad slot code you want. But I strongly advise you to create an ad unit with size only 468x60 because sticky ad this amp will only appear on mobile only..
4. Click SAVE. Then try to open your blog on your smartphone to see if your Adsense Page Level Ads Alternative works or not on the blog with AMP.
That's a simple tutorial on how to put Adsense ads named Sticky Ad AMP, hopefully useful.