hi i just build online shop with wordpress + woocommerce and i find wholesaler and he told me he working with Paypal, i made a payment with paypal in my woocommerce and test it in paypal sandbox : i open 2 accounts in paypal sandbox, 1 for buyer and 1 for the online shop, in my email [online shop paypal account] i get all the information, payment, product, shipping address, but what i don't get is the information about the consumer buy the product from my online shop. like my url of my online shop, that the wholesaler knew is my online shop. how the wholesaler can know the consumer pay for the product Through my online-shop and the wholesaler pay my Commission.
You can ask the seller to provide the affiliate link. Affiliate is the best method to solve your problem.
Sounds like you are dropshipping, are you? if you are then there are two relationships, one between you and the customer and one between you and the wholesaler/dropshipper. Your wholesaler should not get any information about your customer. Once they place an order with you, then you place the order with the wholesaler/dropshipper. If you are receiving commisiion then you should not be handling the money at all, it should be the vendor al