Setup a coupon 30% discount over $100. Works fine. When a customer needs to checkout they can login as a guest or a registered customer. After login either way if you change the quantity in the cart below the $100 and the discount coupon disappears like it should, when applied again it will not work if you add more to the cart of other items and or just add the quantities back to meet the minimum. If I clear cache it works again just fine of course you have to reload cart.
Any ideas?
Thank you