Hi Atalanttore,
can you please describe how exactly you installed Nextcloud Hub, via AppCenter or CLI? Is it a single new UCS system? Is the system up to date?
Does the Univention Portal have a log viewer hidden somewhere?
Not at the moment, we have a lot of UMC modules where you can administer the system via web interface, but for details and better understanding the system its better to administer via CLI.
Could you please check the following?
- univention-check-join-status
- univention-run-diagnostic-checks
Regards
Robert