The instructions state:

After downloading the executable, run it with --url first.

LGTVDeviceListener.exe --url ws://192.168.42.42:3000

This will do two things:

1. …
2. LGTVDeviceListener will then start listening for device events and log them to the console.

This is a lie - LGTVDeviceListener does not log device events if --url is passed (or, more specifically, it requires --verbose to be added as well). Either the instructions should be fixed, or LGTVDeviceListener should be changed to log device events in this case.