Thank you Tristup, much apprechiated.
I tried to adjust the links in the navbar (Size 17 px, Font 300 Book, 0.125 em letter spacing, base colour rgb 255, 255, 255, interaction 242,219,9). I did not find the buttons to do so in the header builder and finally did it using the old/regular header adjustments. Apparently that f***d it up. So the header now seems to the old one.
Further I did not find out where to adjust the font in second Header (Container 2) to have font size, spacing etc just as it is in the old header version.
Would you kindly do those hopefully final steps for me?
Should the header 2 language change work for the time being by means of Polylang , I would use it for the time being b(without touching it, promised!).
Regarding WPML: would the basic & free version of it achive what is needed or would it have to be the 90 $ version?
I feel it is about time to put something in your Coffee box. How could I do this?