When someone clicks on your custom affiliate link, a browser cookie will be created on their system. The cookie is valid for 30 days. When a customer purchases or upgrades to Pro license within that 30 day period, our system will attribute the purchase to your affiliate account. You will earn a 20% commission on the initial purchase amount. (Please note that commissions are earned on the initial sale only, not subscription renewals.) Remember to always use your custom affiliate link in your promotions in order to track purchases that come through you. We cannot pay out commissions for purchases that are not tied to your affiliate URL.