which permissions did you “fix” and what value did you set ?
Upgrading from DSM 6 → DSM 7 has several steps due to the massive changes in DSM 7.
If you still have all the data in the Plex shared folder then the entire server can be migrated to DSM 7
There are two important parts to the process
- You’ll need to uninstall & erase the transient DSM 7 PMS (it’s empty)
- you’ll need to ensure System Internal User PlexMediaServer has full control of everything in the Plex shared folder ( "Apply to this folder subfolders and files )
Read here. Ask if you have questions
Be careful as you read. This FAQ details DSM 5 → DSM 7 as well as DSM 6 → DSM 7