An option is available to make it so affiliate coupons can only be used by new customers on their first order.
This can be enabled in the Plugin Settings > Fraud > Coupon Usage Restrictions. Enabling this will apply this setting globally to all coupons that have an affiliate user assigned to them.
If preferred, you can enable “New Customers Only” for individual coupons in the “Usage limits” coupon settings tab. This can be applied to any coupon code (even if it’s not assigned to an affiliate user).
