Promo code: Alldeckedout - items in cart not showing up at checkout

[49ercountry]

Hello,

I have about 11 items in my cart and am trying to check out but when I do it only shows 5 items. With all the items in the cart I will receive 15% off but because it is splitting the order I now cannot get the 15% discount. Also, the coupon is a one time coupon so once I use it on the 5 items in the cart I will not be able to use it for the rest of the stuff in my cart.

Any ideas on what is going wrong?