i had similar problem in past, when i have changed my antenna voila all works fine, not sure if the same problem for you but if can test other antenna would be better than do a sdcard format
By the way. I noticed a similar defect with Flightfeeder. Part of an aircrafts can not be seen. I see a plane in the sky, I see the airplane on FR24 map, but it invisible for Flightfeeder.
For example now - These aircraft flew near Flightfeeder’s site flightradar24.com/RSD74/97c2ea3 flightradar24.com/MOV116/97c2da5
By way about “When this option is activated, you can see additional flights for which FlightAware does not have a filed flight plan”.
Is it possible to hide “flights for which FlightAware does HAVE a filed flight plan”?
Many wrong an aircrafts on FlightAware live map.
It’s very annoying.