How to enable MLAT

After the upgrade from 6.4 to 7.2.2 (Flightfeeder), i still without see any MLAT airplane in my screen. It is weird because on FR24 i can see them flying over here.

Thanks.

Multilateration requires several receivers distributed around the area to be covered. There are not enough receivers near you for multilateration to work in your area yet.

Mine too. The light displays yellow.what does that mean?

MLAT requires synchronization with other nearby sites. You can see on the coverage map if you are in an area that does MLAT.

You can see the exact number of synchronized sites on your FlightAware my-ADSB page.
Click on the my-ADSB link at the top of the flightaware.com website to reach your ADSB stats page.
On your site it should list the number of synchronized sites you have.

Feeder Check-In: a minute ago
Feeder Type: FlightFeeder 7.8.7
Multilateration (MLAT): Supported / Enabled (synchronized with 72 nearby receivers)

You need at least 4 to do MLAT. Yellow MLAT status means you have MLAT turned ON but something is preventing MLAT. You can mouse over the status to see the reason.