Uninstall the DSM 6 Plex package.
Send me screenshots of what you see in FileStation if you have ANY doubts.
Knowing you have (in shared folder "Plex) , Library / Application Support / Plex Media Server ) , IF this is true, Uninstall the DSM 7 package you do have installed with the ERASE option. (it’s a rogue and empty install which only causes more problems)
Next, I’d like you to read here. It will give you an idea of what will happen.
(Scroll down a little bit. You are “Scenario 2” )
Let me know when you’ve had time to look through this.
