There are two separate LDAP servers - internal one and an external one. The external facing one can be authenticated against by the one and only "virtual admin user" i.e the admin CN above. Cloudron admin and Cloudron users don't have the permissions to search for other users in the external facing server.

I did not use admin, instead, I used the credentials of a admin (and another non-admin) user of my Cloudron, since it should be present on the LDAP server, as the instructions state. I also tried the credentials of the Wordpress admin user. Didn't help.

Miniorange's support suggested entering the Bind secret into the Service Account Password field, which also did not work.

Here are screenshots of

• the role mapping tab: https://snap.notizlab.de/1TMMdRHF
• the attribute mapping tab: https://snap.notizlab.de/jthpJyjx
• the login settings: https://snap.notizlab.de/XLtVcDNp

I guess they might not be very helpful in particular.

Related documentation: https://docs.cloudron.io/user-directory/#ldap-directory-server
Since Service Account Username is redacted I assume you did not use admin there?

Can you also share the other tabs configurations of Role Mapping, Attribute Mapping and Login Settings?