Menu is not working on some pages. Also, how to make header menu header full width?

Try to disable Dynamic CSS & see if it helps: WP Admin > Divi > Theme Options > General > Performance > Dynamic CSS > Disabled

1. Go to the red bar Section settings > Advanced > CSS Class & remove free-header-overlap & add free-sticky
2. Then set the background color at the red bar Section settings > Background
3. Then go to the red bar Row settings & remove the negative margin top.

And it should work.

For that case, you will need to use the red bar from Style 9.

Basically, you just need to go to edit your Style 7 & load layout from library > Your Saved Library > Header & Navigation Style 9.
**Remember to uncheck Replace existing content

After loading the style 9, remove those section that you don't need.

Let me know how it goes.

 

I see that you installed the old version of the header plugin. Here's the latest version: https://divi.help/threads/divi-ultimate-header-plugin-v3-1-6.8645/
**The latest version also include the ability to update future version through Wordpress admin.

Each time you update the header design, you just have to clear Divi Static CSS File Cache at: WP Admin > Divi > Theme Options > Builder > Advanced > Static CSS File Generation > Clear
**Or you may choose to disable it temporarily.

 

Check this out: https://divi.help/threads/divi-ultimate-header-plugin-v3-1-6.8645/#post-27345

You won’t lose any customisation.