I am using an Nvidia Shield android. I cached a map of my surrounding area. When I go to fly at a park about two miles from my house I get the map of the place I am flying but I am not getting a line that follows the Phantom 4. I just get a circle and the arrow rotates but does not draw a line. When I flew a couple of months ago at a park about 7 miles from my house I flew and got a line from the home point to the craft. Can anyone help me so I get the flight tracker to work each time. Any help would be appreciated