Hi @Babak, does anyone have these plugins for woocommerce?
https://woocommerce.com/products/referral-system-for-woocommerce/ and https://woocommerce.com/products/coupon-referral-program/
https://woocommerce.com/products/referral-system-for-woocommerce/ and https://woocommerce.com/products/coupon-referral-program/