PMP450m, "you have timed out of your session, ...

I am gettinng "you have timed out of your session, have been locked out due to too many unauthorized access attempts, or have exceeded your maximum allowed sessions. "

This is with an added user.  Testing in the lab, even a power cycle does not allow the added user to log in.

I do not see when one can configure maximum sessions.  I am new to Cambium.

Thanks