I can give you a workaround for this that I’ve used. In the jail edit the file Plex Media Server Preferences.xml file (in my case) located at:
/usr/local/plexdata/Plex Media Server/Preferences.xml
and add the attribute
to the Preferences element.
Then give your server a restart and check again
Not the best security but it enables you to set it up. See Plex.tv for more info.
Bad Behavior has blocked 107 access attempts in the last 7 days.