It looks like this is possibly related to the LetsEncrypt root certificate expiring today, but there are many other people reporting similar issues over on this thread: PMS suddenly shows issues with remote access 9/30/2021 10AM EST
I’ve had the same issue starting later this evening for me, UTC-6 though.
Device Details:
- LG 55SM8600PUA
- webOS Version: 4.9.3-5380409
- Software Version: 05.10.30 (not sure how this is different than webOS)
- Plex App Version: 5.0.1