I have had a drone for about a year and a half, but have avoided any areas with an altitude restriction. But now, in an area with a 50′ altitude limitation, I applied for and got LAANC approval thru Aloft to fly up to 50 feet for 2 hours. But my Mavic Air refused to take off, repeatedly. What do I need to do to get the drone unlocked in addition to getting a LAANC approval? How long will it take. Any advice appreciated.