I’ve successfully managed to move plex to a new laptop before and I need to do it again but it hasn’t worked. I zipped up the appdata folder, moveit over, unzipped to the same place, imported my registry settings.
Log in, no media, no libraries. manually add in the libraries and it starts scanning for metadata again even though the metadata folder is there
Ok, the only other thing I can think is the permissions for the appdata. Since that came out from the “user” folder, the permissions are for that Windows user. Even if you use the same name on the new computer, it is still a different user. I would check the permissions and make sure the user on the new computer has permission to those folders.