I'm getting the "You do not have sufficient permissions to access this page."
I received a login and admin-rights by the administrator. I made changes and decided to remove a user (not the administrator), which did not need access anymore. When I tried logging in again, it came with the error message. And my ftp login had stopped working.
Strangely though, after it says "You do not have...", it shows me the wp admin bar, but none of the links are working, but my user is shown with name and photo - and I can logout.
I read that somebody used the program WP-CLI to correct stuff one the troubled wp site. Can this be done for me too?