Mega menu issue

Hello!
Could you tell me please how I can build a mega menu in the main menu (like this one https://maxmegamenu.com). I begin to do it with this plugin, but the theme doesn't work properly with it.

Elena

Hi!
We don't provide any services for editing themes for individual users. Perhaps, you need to edit header.php and functions.php files to customize your menus. You may read the following article on the official WordPress forum - https://codex.wordpress.org/Navigation_Menus