I see you mentioned Bell Fiber…do you have the gigahub router? If so, see the thread below. there are also several on Reddit experiencing the same issue. Something with the router is causing issues with local connections. If they disable the port forwarding on the router and disable remote access, local connections work. If they enable remote access and port forward, remote connections work, but local connection only work indirectly. When the server is on a NAS, folks can’t even connect to the local plex interface via direct ip.
A few of them have contacted support and requested a new router and gone into the store and replaced it. As soon as they plug it in, all is working again.
Similar issues:
https://forums.plex.tv/t/plex-asking-for-remtote-watch-pass-while-on-same-network/938220/16
https://www.reddit.com/r/PleX/s/gv4IHg7poD
https://www.reddit.com/r/PleX/s/Mu6Y9YuoBf
