Hello, @Thomas,
To know how to edit/change or build new Icons and Text in the Top header on Mobile and Desktop, I have captured a video for you on my test site. Please watch it completely and follow the steps shown in this video.
https://www.veed.io/view/063d8fe1-d4d0-4387-b357-5dafa899f149?sharingWidget=true&panel=share
Regards 8Themes Team.