Report back, I posted while ago and I am confirmed it will not get reimbursed. (Been a week already and my previous experience tell me it often posted in 2-4 days, and it will be very risky to call Am EX for it.)
Now I am getting it through the correct channel and give up Airbnb gift card deal, I am making sure it is Atlanta, not Cashstar site.
this time will be 50x5 for HH.
Wish me luck.