Can I modify my form of payment? BESTSELLER SERVICE May 17, 2018 13:57 Updated Follow Unfortunately, once the your order is placed, you cannot modify your form of payment. Related articles When will I be charged for my order? Are gift receipts an option? PAYMENT Why does my order say DELIVERED, when it was never received? Can I add/remove items from my existing order? Comments 0 comments Please sign in to leave a comment.