I am still new to this sport and have a question. I switched my bird over to Naza mode because I want the "return to home" and "home lock" features. I went to a local park to fly and test out the features this afternoon. Powered on everything and the app showed "compass calibration required", I tried about 5 times and after every attempt I got fast flashing red, no sat's showing on the app either. I did not try to fire the motors on To cold to continue so I was driving home and stopped at a different park, fired everything up and it did not even prompt me for a compass calibration. Looked on the DJI site map for the no fly zones and it was not listed. What else could have been wrong?