My LG TV is not detected, which setting should I change on the TV?

On your LG TV, there will be a setting whether the TV can be found by the Mirror for LG TV app. This is how it looks like on WebOS based LG TVs:

a screenshot of webOS showing how to connect apps to LG TV

On other LG TVs (older models) you will find the same setting, but it might be called DLNA DMR (Digital Media Renderer) ON or OFF.

To allow the Mirror for LG TV app on your Mac to find your LG TV, always set this setting to ON.

screenshot of the mirror for lg tv screen mirroring app by AirBeamTV

ALSO DISCOVER:

Screen Mirroring FAQs

How Does Screen Mirroring Work?

Screen Mirroring Mac To TV: Free Trial