Hi Kiran,
thanks for helping to solve. I guess it was related to cache files, because I have now deactivated and deleted all cache (autoptimize, wp supercache, cloudflare).
Then also I realized a strange thing.
Instead of main category “attractions” it is set the german “attraktionen” as default in edit listing settings in the backend.
I am unable to change this from DE to EN category setting as not saving or displaying the proper main category in EN > Screenshot. I also tried serveral times to change and re-save but unable to display in right format.
But within database the right EN attraction category with ID “2” is set. As a reminder the DE category Attraktionen has the ID “1424”.
As far for now it seems to be solved. THANK you very much for your helping advices.
Best, Alex