I purchased the Litchi app recently and am having difficulties using the app. I purchased it mainly for its Waypoint capabilities. I have created way points I start the App, warm up the AC, take Off, switch to Atti Mode. Load the waypoints and it tells me I am to High to load. I am only a few feet away. Some things I have read say I need to start the Phantom using the DJI go App and then switch to the Litchi App. Can anyone give me some advice? Most people seem to be using android not IOS.