I will suggest you magento 2 affiliate extension https://amasty.com/affiliate-for-magento-2.html. Run full-scale affiliate programs on your website to effectively drive sales from alternative channels. Provide affiliates with promo materials and detailed stats reports. Easily manage affiliate accounts, regulate commissions and track withdrawals.
Launch affiliate programs based on cart price rules
Set a specific commission type for each program
Configure discounts and payout requirements
Use a great variety of promo materials
Manage affiliate accounts and transactions
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