Hi Super-Admin,

You go to edit and start editing the header. There you can click on the phone number and you need to change the text of the number as well as the link of the phone number. The link can be changed either through the conext menu or via the menu you find on the right - all the way down to "Inline Text". 

Hope that helps.

OK - I found, how to edit the menu structure, but the problem with the wrong phone number still exists.....

@Technicomp:

Thank you very much. The problem is, that with editing the Header the f***ing phone-number is not shown, but I "solved" it now with deselecting at the elements-section the "Show/hide Text-Element".....