Hello, @mariangio,
Please watch this video, I have captured for you, You were using the Multiple Headers on your site and I have removed the condition for one of the headers from your site and it picked the correct one now to show on frontend as well.
https://www.veed.io/view/492b6c4d-3162-4839-b3b5-28c0d2adc153?sharingWidget=true
Please watch this video to know/learn more about Multiple Headers: https://www.youtube.com/watch?v=BpeXfzNwkOc
Regards 8Themes Team.