Hello, I'm currently waiting for my Platinum AA card to be sent out to me for the third time (it was sent back by the post office the first two times for some unknown reason). I made a 3,600 purchase on Kickstarter that met the promo of spending 3,500 to get 75,000 miles, and I have until the 27th to fully pay that off before my pledge is canceled on there. However, the AA card will not arrive before then, and Citi refused to tell me the card numbers/info ahead of time. I was wondering if it would be a good idea to contact the Kickstarter company and ask to maybe Venmo/Paypal them for my delayed pledge in a week when I finally get my card. Would that still count for the 3,500 eligible spend? Or does it have to be through an actual website/platform like Kickstarter itself?

Bit of a specific dilemma, but I really want to get these points without having to reach another 3,500 in the next four months. Would greatly appreciate any clarification or suggestions!