It's widget https://monosnap.com/file/f0DbzME4jMDJKatvhmF7kLSbHgF0F0

This widget looks like a block and you can put menus in it. I don't have it separately in Widgets and I don't know what it might be hiding under.

this is not block, it's widget so I don't know what you mean

I had this block in the block menu in Elementor which is no longer the case. I can only use what I added earlier see screen.

In Greenshift I also don't see anywhere to add it and thanks to it the menu.

Appearance-widgets and add Rehub:better menu to widget area which you need

Hello, 

where is Rehub: better menu i Greenshift? Or how i add menu?

Thank you.