Hello @enricobt – thanks for reaching out to us!
Please be advised that AMP plugin strips out all scripts & CSS & HTML other than its own. You would need to get with the author and see what would need to be done to allow PMs assets and popups to load there honestly.
This answer does pretty well to explain the issue, and mainly that Google doesn’t want you doing that either:https://premium.wpmudev.org/forums/topic/how-to-make-pop-up-pro-works-within-amp-posts
I hope that gives you insight. If you do have further questions, you can always reach us back.
Have a great day!
