How do I remove authenticated Open Directory binding to itself?

In attempts to solve my file sharing issues I have at some point on macOS Mojave + Server, using Directory Utility, bound the Open Directory server to itself using Directory Utility (I was quite desperate). Now, with all the changes I made I was able to get the client machine use authenticated binding to the server machine and now SMB file sharing works. So far so good, but I cannot change the passwords of users anymore. When I try, I get the following error: existing connection is not authenticated and the old password is not present: password change denied DNS is ok. What I can find is that in the past one could 'rekerberize' the server but that information is old (Mavericks) so I don't want to try. I was looking at removing the local authenticated binding on macOS Mojave Server. But in Directory Utility that is greyed out. And I do not dare to remove/recreate the LDAP server with Directory Utility on a production server yet (very scared).