I have one WordPress website , which is not designed, but I thought maybe using it as a backdoor page for a shopping cart. I want to implement discount coupon and affiliate system .I tried WordPress PayPal shopping cart but it did not work...

Hi friend, I have one wordpress website , selling social service having paypal shoping cart ....I want to implement discount coupon and affiliate system .I tried wordpress paypal shoping cart but it didnot work i want to implement in same s...