User overview shows circle


I’ve configured the ldap integration on our nextcloud 12.0.3
Only members of a specific AD-group should be able to logion, not all. Currently there are 21 members in this group.

The persons are able to login but when I open the users in the admin area I just see a running circle.
When I click to groups there is also only the circle so I’m not able to setup NC group memberships.