Follow the instructions below on using Shopify to process your Affirm transactions.
When a customer completes checkout with Affirm as the payment method, a new order appears in your list of Shopify orders. Affirm authorizes a charge for the amount of the order. This charge appears in the customer's Affirm account with a Payment Status of Pending.
To complete the transaction, open your Shopify admin panel and then change the Payment Status from Authorize to Paid by clicking on Capture Payment.
Note: When a customer completes checkout with Affirm as the payment method, Affirm authorizes a charge for the amount of the order. The charge appears in a pending state on the customer’s Affirm account. Authorized transactions expire if they are not captured before the capture deadline. The default capture deadline is specified in your partnership agreement with Affirm. If you did not specify your authorization-period requirements because of inventory, pre-orders, or shipping time in your onboarding form, please email firstname.lastname@example.org for help with completing this process.
Auto-Capture: If your Shopify payment settings for Payment Authorization is set to "Automatically capture payment for orders",