Was recently approved for the Platinum Select and was given a temporary card number to use on aa.com. Bought one ticket on that same day (went through fine) and tried to buy another ticket a few days ago, although the expiration date keeps getting rejected on this purchase...

Is the temporary card number only available for one-time use, or should it work multiple times up to the temporary limit and expiration date? It still accepts the payment info on aa.com, and only sends me a rejection email a day or two later while the itinerary is being ticketed. Maybe an issue on Citi's backend?

Thanks!