PlexMediaServer is currently unavailable after upgrade from DSM6 to DSM7

You probably missed one small step (which is VERY common)

To remedy this:

  1. Uninstall the DSM 7 app and select the ERASE option
    – This removes the empty DSM 7 Plex instance you’re now seeing

  2. Open FileStation

**The most important points here are:

  • Full Control
    and
  • Apply to this folder, sub-folders, and files

as you give the new username PlexMediaServer control over everything in the Plex shared folder

(DSM 7 took away all the privileges I had for DSM 6. This is why you need to assist by granting permission manually)