Can not reach PMS servers which are in docker containers

Just recently all my 3 Plex servers stoped working. Ive tried to restart docker containers. Ive tried to recreate them. Ive tried to create new containers with new PMS configs … nothing helps.
I can reach general web UI but it just cant reach this server. Endless “Looking for servers …”


PS
Server Version#: 1.17.0.1841

My plex server got unreachable today as well. I saw my browser complaining about the certificate not being valid for my domain. I saw it seemed to be a certificate signed by plex, and not by my Letsencrypt setup. Rebooted the Plex container and now it’s just not reachable anymore. Not sure if the two are related, but it’s a downer anyway. The container seems to be running just fine though.

I was finnaly able to get them back online after playing with Preferences.xml file

What did you change? I am not able to get into my plex no matter what I do. I don’t know where to begin troubleshoting this now.

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