Before Each Payment Is Due, Affirm Will Send You Reminders Via Email And SMS That Will Include The Installment Amount That Is Coming Due And The Due Date. You Can Also Sign Up For Autopay So You Don’t Risk Missing A Payment. Please Follow These Steps To Make A Payment:Go to www.affirm.com/accountYou will be prompted to enter in your mobile number where you will be sent a personalized security pin.You will be prompted to enter in your mobile number where you will be sent a personalized security pin.You’ll now see a list of your loans and payments coming due. Click on the loan payment you would like to make.You can make a payment utilizing a debit card or ACH bank transfer.