SOLVED no Server IP or Hostname field in Backup NFS configuration
When choosing NFS as Backup configuration, there is no field for hostname / IP like it is explained in the docs.
@paraviccini I think this is because you are in version 6.2. This feature was implemented only on Cloudron 6.3 (docs are already updated). If you go to Settings -> Check For Updates -> Update, you should get 6.3. We haven't started rolling out 6.3 actively, so it will say that the release in unstable but it should be reasonably stable.
Thanks that was it!