Yes, I did place an order and pay with Paypal. I got an email confirmation, and I'm assuming it will ship soon. I've never purchased anything through them before so I don't know if I can help you, but I will try!
When you try to add something to your cart, make sure that you select the size you want from the "Please select an item" pull-down menu. Are you doing that? Or maybe if you tell me what you are trying to order, I could help?