Ad Inserter supports insertion of ads on AMP pages, just make sure you are using right ad codes for AMP pages. Works with top AMP plugins for WordPress.| Ad Inserter Pro
Short instructions to become familiar with Ad Inserter plugin. Practical example for settings for ad before the second paragraph on all posts.| Ad Inserter Pro
The plugin has many debugging functions that can help you to diagnose the problem when you don't see your ads at expected positions.| Ad Inserter Pro