Hello,
the issue was in the backend.
I made a 3 new inputs myself now and the adress and other info is saved. Also a second issue is solved now. The picture that I add is again vissible in the back-end overview. This was not the case anymore for new pictures.
The pictures that I added yesterday are still not vissible in the back-end overview but are vissible in the frontend. Solution is to upload new picture and then this issue is also solved.
The place where I had issues with was still an issue. Adress could not be saved but I deleted this input now as I can bring in new places.
Thanks for the follow-up.
Kind regards.