Cannot set password after auto upgrade to 4.0

Sonarr version (exact version): 4.0
Mono version (if Sonarr is not running on Windows):
OS: Windows 10 Home (22H2)
Debug logs:
Description of issue: Sonarr recently auto-upgraded to v4.0 so I must set a password. When I add DisabledForLocalAddresses to config.xml, restart Sonarr and attempt to connect via localhost, I still get the login screen and when I re-open config.xml, the AuthenticationType line is no longer there. How can I actually get into the Sonarr settings to set a password if this is happening?

Reinstall, only this time run as admin for the install.