I GOT IT! 
-
Stop Plex
-
Regedit (Navigate down to – )
– HKEY_CURRENT_USER
— SOFTWARE
---- Plex, Inc
----- Plex Media Server -
Remove -
– PlexOnlineHome
– PlexOnlineMail
– PlexOnlineToken
– PlexOnlineUsername -
SET (IMPORTANT)
– PublishServerOnPlexOnlineKey = 1
It will look like this when done
-
EXIT RegEdit
-
Start Plex
-
Now, open http://127.0.0.1:32400/web
You will see the hostname and existing library sections with it -
When you go to it, you’ll see it’s unclaimed.
-
Claim it.
Please let me know your progress

