I need to know how to stop pop ups

I need to know how to stop pop ups

First, I’m an Avast user and not an Avast Team member.

Some detailed information on these popups would help is to help you.
What are the popups, when do they occur.

A screenshot may be helpful.
Create a screenshot on your computer and save it locally. Using windows explorer or other file management program, drag and drop into your post.