My Ipad Air 2019 does not have built-in GPS. I do own a Dual XGPS150A that I can connect to my Ipad by Bluetooth. What I can't get it to do is to display maps in the DJI Go app. I installed an app named maps.me, which is an offline mapping program and I can get a map with Wifi turned off but still can't figure out how to make this work with DJI Go. Any advice would be appreciated.