To replicate such functionality, you must use the Header Builder to create a custom template with a button that will open a popup and Popup Builder to create an appropriate popup template:

Go to Appearance -> Menus, create a new menu, and add product categories, creating the hierarchy you need.

The open popup option is for popup templates, not for lightbox images.

Hello, I created a popup with the popup builder then, following the instructions in the tutorial I created a link on an image but if I click on the image in question instead of opening the popup it gi

Hello,

2) Hide/Remove "Header Menu" for width below: 1289px

The wrong page was assigned to your menu.

PS. The Home page that is presented after clicking on the icon at the top is the one i'd like to show on both the icon and Home page in the menu.

If you mean is the Home page set correctly in the main menu to be "Home" then yes.

I am open to considering customization, but I would appreciate understanding how the template currently decides the category path to prioritize, and if there are any suggested workarounds you might re

Instead, you must create a new menu with the desired construction and replace the Query Loop in the sidebar template with a menu element.

Did you set it up correctly in Appearance -> Menus?

I don't have this option in the menu. I can't find it anywhere, not even under Theme options.

Never mind about the text in the menu (upper left-hand side of the page; the default BE THEME AUTHOR text), I found the setting.

So i'm trying to find out why the emblem at the top of the page-emblem> home page is different to the menu Home>home page?

Please open your products and update them. It should correct the display.

If I keep clicking the "About Us" menu option I can sometimes see the words from the paragraph below quickly flashing up in the middle of the header image area.

Please open the Slider Revolution settings and change the Rendering Engine to SR6, and check if the problem persists.

#mfn-sidemenu-tmpl-13420 .mfn-sidemenu-menu .menu-item .outer-menu-sub{

It is an Elementor lightbox, and to hide it, you must open Lightbox settings and set Title to None: