Menus and header disappear

Hi Tom and team,

I don't usually write to you because I always find an answer on your fantastic forum. But today I'm completely lost. I was configuring my site and I had the menus (principal and secondary) done. I was fighting with Font Awesome icons but I solved the issue. Then I configured a nice full width header for the homepage. The results were nice, so I started with the content layout using Elementor. As I always use that combination: generatepress + elementor.

First, I noticed that when I was buiding with elementor, there was no header. Nevermind, I continued writing. But when I clicked to see the preview, the were no header nor menus, to my surprise.

I deleted what I did with elementor, and I have try to deactivate all the plugins. But the page still on blank.

Any idea what is causing the issue? Because the header and the menus are properly set.

Please tell me if you need access to the site. But some help would be gratefull. I dont wanna lose all my today's work.

Thanks in advance. You are the best guys ;)