Hi, @FlorianWerndl, would you please first delete the inactive DNS zone here?
There is more information about why that should be deleted here:
There is a second issue. The primary custom domain for this site is www.bausatzbuch.de
and not bausatzbuch.de
. Because of this the branch subdomain must be branch-name.www.bausatzbuch.de
and not branch-name.bausatzbuch.de
.
To resolve this second issue, either make the CNAME record for develop.www.bausatzbuch.de
or make bausatzbuch.de
the primary custom domain for the site (under Site Name > Settings > Domain management > Custom domains).
If there are any questions about this, please let us know.