I’ve tried multiple installs of PMS with and without Host networking checked. With it checked I lose the ability to access the web portal at all, even via IP.
One thing I also wonder if if you are using the same port number as when the server was in the jail. I think I heard when moving a server like this you want to change the port forward you’re using. This might have to do with the ‘plex.direct’ domain names being generated pointing to the old local IP and not the new one you moved to.