I am being told the my server is unauthorized despite removing everything and starting again

[ChuckPa]

When it gets confused, a simple credential reset is all you need.

Synology FAQ - Questions, Answers, and How-To's

FAQ 31: Reset / Reclaim PMS on DSM 7 (Not Authorized - Locked Out) Uninstall the app - Use the first radio button (KEEP) option. [Screenshot from 2022-09-27 16-04-18] Reinstall the same, or newer, SPK (package) version. Select the “Install using Plex Claim Token” button Click the ‘Get Plex Claim Token’ blue hyperlink In the tab which opens, COPY the token it gives you [Screenshot from 2022-09-27 16-07-35] Return to the installation page. You only have 5 minutes. B…