Were both the new and the old Plex server shut down during the copy?
Did you also copy the registry branch from the old to the new server?
If you did, you cannot run the old and the new server concurrently. To make the new server separate, you’ll have to manipulate the registry again:
remove the following keys:
- AnonymousMachineIdentifier
- MachineIdentifier
- ProcessedMachineIdentifier
- PlexOnlineToken
Additionally, edit the key FriendlyName, so that the two machines get unique names in the Plex user interface.
