I had my main drive crash and reinstalled plex server. Now i cant delete these and they always say unavailable. I added my libraries back and they work but this is an issue that I cant figure out how to remove.
Can you see those old server records in the list of authorized devices (servers)?
https://app.plex.tv/desktop/#!/settings/devices/pms
If so, you should be able to delete them by clicking the red x on their tile.
Make sure you don’t delete the record of your current/new server.
Thank You. I could not figure out why they were there. That fixed my issue. Many Thanks