I’ve got the same issue as you, by the sounds of things. I just posted here Can't view my plex server or content libraries via primary account but I can via a managed account - #4 by geraldgg
An interesting thing I’ve noticed is that I had a plex client still open on one of my devices from before the issue started occuring, and on that device I can still use my admin account to interact with the library and watch content. But on any other device I have, my admin account cannot see the libraries and I have to use a managed account instead.
It’s frustrating that you’ve had no help for nearly 2 months. I’m not hopeful I’ll get a quick resolution either.
