Hi we have have setup a Shopping Cart Price Rule of 10% discount for Coupons.
When entering the coupon number during checkout, it deducts 10%, but when we proceed to pay, from the website to paypal it seems to deduct roughly another 10% again.
This meaning that a sale of $179.91 with coupon applied changes to $162.91 but when we check out to paypal, it reduces further to $145.90.
Also we have just noticed that this only happens when the customer purchases 2 or more itemes. If they purchase 1 there is no issue at all.