When I open my prefs and login on the machine where the server is running I'm getting the following message even though I'm signing in properly and I can actually see all the settings and content after I click on either of those buttons.
"No soup for you!
The server you're trying to access doesn't want to let you in. Make sure you're signed in as a user with access to this server."
Any ideas why? macOS 10.12 with latest Plex