Main menu not visible

Hello @gusum,

There are 2 places where you can set the primary menu for the website

1. WP Dashboard > Appearance > Menus : Manage Locations: https://postimg.cc/Bjctz6WV.
2. Under the edit page > OceanWP Settings > Menu: https://postimg.cc/wyDrXSRL(it will only change on the current page).

Please check these two places where the menu must be set.

But on the home page of your website; I can see the page template is in Elementor’s canvas; The elementor canvas will disable the theme templates. Instead of this; you need to use the default template: https://postimg.cc/WdPx3pDj.
Please follow the steps explained in this link:
https://elementor.com/help/using-elementors-canvas-page-template/

I hope it helps.
Best Regards