If anyone comes to this post looking for help on using Divi with BuddyPress here’s the first thing that you need to do.
1. Log in to your WordPress site.
2. From the WordPress sidebar select “Divi > Theme Options”.
3. Go to the “General” tab (which should be selected by default) found below the Divi Theme Options text.
4. Click on the “Performance” sub-tab.
5. Disable “Dynamic CSS”.
This should fix the header and footer formatting issues that most people see when using Divi with BuddyPress.