I have been running Plex on a hard wired intel nuc with remote access 3+ years with no issues until today. ISP is frontier if that matters. Port 32400 is forwarded on router properly and portchecker also shows 32400 as open. What is strange is I can access Plex through WANIP:32400 no problem. However externally Plex server appears offline by logging in through plex.tv or the mobile app off local network. When enabling remote access it appears as “fully accessible” until I refresh the page or wait a couple minutes.
Thought maybe it was a cert issue until a mod on another thread stated I was not affected by a stuck cert.