You do not have sufficient permissions to modify the users on this account.
I was cleaning up our users under user management, and I thought I had given enough permissions to the other users to have full control to be able to add, edit, and manage users, but now those accounts are telling me "You do not have sufficient permissions to modify the users on this account." - including my account.
There are only 4 email addresses under that account (under user management). How do I add in a user that can mage that area?