I’ve tried HAN and DAD both under 5k miles and neither will work. They tell me in their system the mileage shows up as ???? So they don’t go any further. Once they said they were working on getting to to work for me as they realized it was under 5k miles and they would have a supervisor call me back which of course never happened. Another time they sent me to a supervisor to get it to work and of course the phone call dropped conveniently. I’ve tried the Facebook messenger team and they said they would have an agent call me back which has never happened. My flight is in Nov so I figure I will just keep trying until hopefully it works.