That was it. But it also seems to restrict Administrator, Manager, and Publisher, not just Supers.

My client has administrator privileges (in the future, clients will be limited to front-end access as Publishers, but I have over 25 clients now who use the administrator).

The immediate issue is for Admins.

How do I get this to work for Admins or other levels?

Thank you,
Ernie

Are you using Admin Tools? If so, there is a setting in the fw (Joomla feature hardening)...

Yes, I'm using Admin Tools. But I'm not sure exactly what setting in WAF would control that. I don't see anything in the Akeeba help that gives me a clue what it might be. I already have most hardening options turned off.

Thank you,
Ernie

Successfully tested the following:

Web Application Firewall -> Configure WAF -> Hardening Options: set "Disable creating / editing backend users from the frontend" to "No".

Not so sure this is a good idea from a security standpoint, but it solves the immediate problem until I can get all the front-end features set up for all my clients to their satisfaction.

Thank you,
Ernie

Yes, that was the setting that solved my problem too. Not the best security-wise, but the only possibilty if you need admins to be edited on the frontpage, I suppose. Do they all need to be administratora or could they be changed to authors/publishers or some custom user group that is not a backend user group?