Just purchased a new Phantom 4, downloaded the DJI App., but cannot find how to get "get into" the flight simulator. I remember (a week ago) when I first started up the flight controller and Drone, there was a 'screen' popped up showing the "simulator", but it dissapeared (maybe due to my input to go to 'flight mode'?. I have read a few "Blogs" re: this subject, and am told to "click" the 'question mark' or 'top hat' at the top right-hand of the screen - - but "nothing is there on my screen". Any help is appreciated.