I think I have found a bug:
When I change the sites location address (global settings), the address isn’t changed.
Maybe this is due to the fact that I use Fedora Silverblue (ostree based) and that the home directory of all users is ‘/var/home/[username]’?
There is also a small error in the documentation (Docs -> Installation): the home directory of a typical Linux system is not /Users but /home.