Has this worked before, do you have rights to edit users and LDAP settings.
Have you got another user with admin rights that you could test if it is working?
Have you rebooted the server since the update?
You raised a bug report, surely Univention team will look at it.
Regarding the need to add Nextcloud permission to a user; I don’t use NC from the UCS App Center, so not to sure what to expect but according to the description:
Nextcloud is well integrated in UCS, offering easy installation. The automatic configuration includes:
Administrator is automatically Nextcloud admin
Users are enabled to access Nextcloud by default
Users and Groups can be enabled/disabled in User & Group Settings
Could there be a group conflict with the NC setting?
Yes it was working before i could give access to Nextcloud app and remove permission without any problem. My UCS seerver is link to our Active Directory Domain. Ive reboot the server multiple times. I don’t have another admin user to test. Ive used my Domain Admin account since the server is installed.
How you give permission to nextcloud app ? In command line ?