Plex: Deleted Server like an Idiot

Hello, I went to log out of a device in a hotel that I forgot to log out of, accidentally removed the entire server from the Authorized Devices page.

I have uninstalled and reinstalled Plex to no avail. I have also totally deleted the Plex folder from appdata after uninstalling, shut down, and reinstalled.

When I go to add media to the server on the plex webapp, all it says is to download plex media server (which was running).

How badly did I fuck up? What do I do?