I purchased the complete Ground Control Datalink with BTU for my Phantom 2. Installed it by following many guides to the T. I can connect to the aircraft just fine, but except on rare occasions I am unable to start the propellers. I am in Naza-M mode, updated to the latest 3.... software. Everything is up to date. In the rare occasion in which the propellers do start to spin, I never see the joysticks on the screen, and in about 20 seconds the ipad loses connection all together. This is with the Phantom stationary. I've done as much research as I can with no luck. Any help would be greatly appreciated. Oh, on the Phantom it's a fast yellow light flashing, on the ground datalink its one solid green and another flashing red. On the Air bluetooth it's a solid green and flashing green with the occasional flashing red for one flash.