Unable to edit UCP user detail information

I’ve managed to mess up a setting in UCP. I can admin users, add/remove them etc, but I do not seem to be able to edit the “User Details” section. Last name, firstname etc. Just get a little red circle “deny” icon.

I’m logged in as the admin user to FreePBX gui, and I have all the rights in the “Administrators” section. Not sure what I’ve done to loose this ability exactly.