Plexamp is not showing the same Managed Users than Plex does when granting access to a playlist.
Plex is showing the good ones as it should be, Plexamp doesn’t. It shows an old and long time deleted managed user (thecloud7) and it is not showing two new managed users (Maison and test) as you can see below :
Plex app:
Good managed user in Plex Home and when granting access to a playlist :