Hello, Antonio!
I have visited your Website and found that you have Header V3 style, with the Enabled header background image on every page other than Home Page (“Inicio”).
Only on the “Inicio” page you have Header V2 style so I suppose you have set up Custom Header style on that page, from the Agama options meta box.
I suggest editing your Homepage and checking your Header settings, located in the Agama options Meta box, at the bottom of the page
https://prnt.sc/s3p4e4
Regards