[WPMU DEV Dashboard] WPMU plugins causing issues with editing the website

Hi,
Hope someone can help find the issue with my website.

If i activate any of the WPMU plugins (dashboard, hustle or smush pro) I can no longer edit the pages using Divi Theme Builder. I either get a 500 server error or the page layout goes very strange (see screenshot – page is very narrow and no editable areas are present).

I’ve checked through all the plugins and it’s only these three that cause any issues.

Hoping someone can help.
Russ