Try getting a star membership, that eliminates them, you only pay what you are comfortable offering.

You can eliminate most on most web sites by using Ghostery, it's free.

https://www.ghostery.com/

What do the popups look like? What do they say? Are you seeing them when signed in, or only when signed out? Are you seeing them on certain pages only, or on all pages?

which leads me to believe he posted this before he signed up and paid for a membership.

Hopefully.

That's why I wanted to check into it, because if the problem is that popups are appearing while signed in as a Star Member, that's obviously something that shouldn't happen.