Cannot sign in - "Can't connect to localhost:[port]"

[Sparkified]

I cannot sign in to the app. It has been updated to the latest version. Clicking "Sign in to ARCTracker" opens a browser window which says "cannot connect to localhost:39876.

I have tried:

• Allowing ARCTracker through Windows Firewall
• Adding ARCTracker to split tunneling through my VPN (Mullvad)

[Sparkified]

Discord server link is also invalid/expired.

[mattmarcin]

Fixed the discord link. Sorry about that. As for the auth issue, the app temporarily sets up a web server on localhost to accept the auth token so something on your network is blocking that from working.