Sorry it didn’t work. Guess what? There’s a new beta 
You can see if that one works which has a patch for MacOS.
Your error - not authorized in Safari after entering the correct PIN.
If the new beta fails the same way or in another way, MovieFan.Plex will want to see the logs. To get them, quit out of Plex Media Server and open a Terminal. Paste in this code, and hit Return.
cd ~/Downloads && zip -rj "Plex Media Server Logs-$(date '+%Y-%m-%d_%H-%M-%S')" ~/Library/Logs/"Plex Media Server"
It will create a zip of the Logs in your Downloads directory. Please drop the zip into your reply. If you’re shy, you can DM it to MovieFan.Plex.
I tried to install PMS on my Ventura x64 MacBook Pro. It worked really well.
I might install Ventura on a Studio external drive and test.
