I had a shoot today at an uncontrolled airport with Class E airspace at 1200 ft. Before the flight I logged into the Air Control Ap on my phone to request a clearance. The AP told me it couldn't supply an authorization because none was needed... uncontrolled airspace. So, I showed up for the shoot and the drone would not take off... message was that I Was in an authorization area and I was not unlocked. Tried filling around a bit with logging into a local wifi and requesting the unlock... not able to make it happen. I am confused... I thought if Air Control and/or B4Ufly showed no restriction, you didn't need to worry about unlocking. Any pointers?