Initial Startup
Lumunarr does not support 1st generation (round) Hue bridges.
User Interface
Once Lumunarr is running, open its web interface in a browser:
http://<ip_address_of_server>:<port>
The IP address is the address of the machine Lumunarr is running on. The port depends on how you installed and started it (see Installation).
Default port: 3939
Plex Login
The first time Lumunarr starts, it creates a new settings file and asks you to sign in with your Plex account.
Everything Lumunarr knows about Plex comes from the account you sign in with. Lumunarr can only see Plex clients (players) that are signed in to that same account. If you want to control the lights for a particular player, sign in to it with the same Plex account you use for Lumunarr.
Next Steps
After signing in you'll be taken to the Bridge page to connect your Hue bridge. The Clients, Server and Settings pages stay disabled until a bridge is connected.
Lumunarr can't do anything until Plex sends it webhooks. Make sure you also set up your Webhook.