You should ask that question at the AirNest website in case they are no longer monitoring this thread.I also bought the app. Due to bad weather no chance to test the app in real life.
Just wondering, if I disconnect wifi on my Ipad there is no map visible in Airnest. Doesn't cache the Ipad the map somewhere?
They do say that you only need an internet connection once so the app can register with Dji. After that it should get the appropriate offline map from your device (assuming you have loaded offline maps) and the P3 GPS. My camera and map worked just like the GO app. Take it outside where the P3 can get a good GPS signal and try it.