I bought a Phantom 3 professional. But can't activate my drone.I do everything in the tutorial videos on this site. I connect my phone to the controller. Turn the controller and aircraft on. The front leds stay red and the rear leds go red yellow and green over and over and beeps. I open the app and I sign in with my dji account and it doesn't let me activate anything. I can go to camera, map, academy, and user center. I follow everything the guy does in the tutorial videos. The guy plugs his stuff in and it automatically brings up the activation mode. Mine doesn't. I'm probably just missing something simple. I'm using an Android zte Lever.