AVG blocking cdn2.editmysite.com

On my Windows 10 machine, AVG is blocking access to cdn2.editmysite.com when I access some Weebly website pages with the result that slide shows are hidden - but on other pages slide shows are still present.

According to Weebly cdn2.editmysite.com is a legitimate backend link used by Weebly itself.

This is happening on the website rdrms.com, but not on others..

When I access the same pages on my iPad all pages display normally.

Why is this only occurring on some, but not all pages with slide shows?

What can be done about it?

Your help would be much appreciated.

Below is the AVG error message.