Why do these green drop points appear on the screen?por que aparece esses pontos de enterogação em verde na tela?
Those points are mouse over points. You will get an extended description when you move your mouse over them.
A similar status can be found directly from your FlightFeeder. Either through the LCD screen (by click on the a status box on the LCD) or by using a web browser to go your site’s local IP. IE http://local_IP_of_FlightFeeder that is found on your myADSB stats page.