Hello,
Please provide URL of your site and temporary wp-admin access via the Private Content area.
What do you mean by “secondary menu”?
Do you mean these menus https://gyazo.com/6b90aac7655edde90487158a9cf55c58 ? They were created using static blocks, https://xstore.helpscoutdocs.com/article/27-mega-menu
“How to create mega menu using Static Blocks” – this video shows how to create static blocks using WPBakery, but it is similar to the Elementor. If you are using Elementor on the site, do not enable WPBakery, just edit static blocks using Elementor.
Regards