If a payout has the "pending order fulfillment" commission status, this means that you have advanced fraud protection enabled, and that the referred order which the commission was created for has not yet been marked as fulfilled in Shopify.

When you enable advanced fraud protection, every new affiliate order that comes in will have to be fulfilled in Shopify before you can send the affiliate their commission. This helps protect you from paying commissions on fraudulent orders that will be cancelled or refunded.

Did this answer your question?