ordered two $100 AA GCs and the charges went through, got Amex credit several days earlier. But when went to retrieve the gift cards via web I was informed they could not be redeemed. Waited a week but no credit from AA so I called AA gift cards and they said they could see that the refund had been initiated for both GCs. Still waiting but it sure takes these refunds a long time sometimes!
On another Platinum the GCs never were charged or authorized (similar to others who have experienced this) so nothing hit the card. I recently tried again with the same two $100 GCs on AA and this time everything went fine and got reimbursed in four days or less.