Mobile menu does not display on all pages

Hello!

I am currently doing a website with Divi and there is lots of stuff still to do.

I was looking to use this plugin for the mobile version only and I cannot manage to make it appear on all the pages. It appears on the main page, and it is pretty much that.

My primary menu is a mega menu using Divi’s classes. Also, my primary menu is mainly made of categories, and not pages (when I created it, I added categories to the menu, not pages).

I also tried to use the shortcode on the header.php of my theme, after activating the option of shortcode of the plugin, but then, the menu was not showing anymore.

Could please someone help me to make appear this mobile menu on every pages/categories?

Thank you!

The page I need help with: [log in to see the link]