I have a Mavic 2 Pro and am currently not recieving the DJI SMS message with the authorization code to unlock my drone so I can fly in a blue zone. This happens with the DJI Go 4 app on my iphone 11 pro. I can get to the point where the app says that the code has been sent to my phone number and it is waiting for me to input the verfication code... the trouble is that I never receive any SMS message from DJII, so I am unable to fly. However, if I drive back home to my desktop computer, go to the DJI flysafe self-unlock website and enter the information, I'll receive the SMS message right away and am able to unlock and fly. I have tested the phone and can send/recieve messages at that location, so it's not an issue of cellular coverage. I tested it at another self-unlock blue zone location as well today and experienced the same issue. Any suggestions? My DJI Go 4 app and my firmware are up to date.