Not showing adsense ads in amp pages.

Please provide a URL to site/pages having the issues.

How are you adding the code for inserting ads?

@lydiafraser as a follow-up, you might be able to use this plugin to add AdSense auto ads to your site’s AMP version: https://gist.github.com/westonruter/a41573b932e24810b09949136b9a8445

Just replace the AD_CLIENT variable’s contents with your AdSense ad client ID.