I have seen these problems also.
The following works for me.
1. Connect WiFi PilotAware
2. Startup Air Nav Pro
3. Go to Configuration->Sensors->Flarm-Connect
3.1 Slide sensor to OFF (green to grey)
3.2 Delete Pin Code and re-enter: 6001
3.3 Delete IP Address and re-enter: 192.168.1.1
3.4 Delete Port Number and re-enter: 2000
!!!!! Even if the values are correct, they must be removed and re-entered !!!!!
4. Slide sensor to ON
5. Go to Map
I have no idea why this is, but it works for me every time when I do this
Let me know if this works for you
Thx
Lee