If a user signs up through an affiliate's referral link and later upgrades to a higher subscription plan, the affiliate typically continues to earn commissions based on the upgraded plan rather than only the original purchase. This means affiliates can benefit from the long-term value of the customers they bring to the platform. The system tracks the referral relationship, ensuring that upgrades are properly attributed to the referring affiliate. As a result, affiliates are encouraged to refer quality users who are likely to remain active and expand their usage.