Find your past-due subscription in the list, then select Pay now.
Change how you pay. If your credit card has expired, update it with the new expiration date. If your credit card is no longer valid or you want to change cards, add a new way to pay. You can't pay for a past-due subscription with a gift card, subscription card, or with your Microsoft account balance. Get more info about how to Add, update, or remove a payment option.
Once your payment option is all set, select Next to make the payment.