Server Version#:1,18.0.1944
Player Version#: Plex Web 4.10.1, Plex for Android (Mobile & TV) 7.22.1.12828, Plex for Windows 1.2.0.875
Running on QNAP TVS-951X QTS 4.3.6.1070
I had been running PMS 1.17 fine for some time now. Upgraded to 1.18.0.1913 when prompted to. Since then, have had issues connecting to Plex.
Before reading any posts, I attempted to downgrade to the last version I had running – 1.17.0.1841. That worked for a short time – was able to connect once or twice. When I was last able to connect, I saw that it was indexing my music (seemed to be stuck), and saw that it was either “Optimizing Database” or “Backing up Database.” Next time I refreshed Plex web app, I was unable to reconnect. Now all I see is “There was an error retrieving content.”
Today, I upgraded to 1.18.0.1944 hoping that would resolve the issues – it didn’t. I’m still receiving the same issue. Without knowing any better, I tried to uninstall PMS (it did not seem to completely remove), restart the server, and reinstall. None of this has worked.
I don’t think I enabled debugging previously, but now I’m unable to connect to enable that setting.
Any help would be greatly appreciated. Thank you!

I’ll call it a night for now - thank you for your time, patience, and detailed responses in helping me work through this. Its greatly appreciated!
We’ll have at it in the morning.