Buying Cubase Elements 8 student version

Hi! I was given a student link to the shop a while ago, Now I finally got the money to buy it, but each time I try to do so, I put the product in my card, added my info (billing and shipping address and my credit card info), when I hit continue it just jumps back to the cart saying that there is nothing on my cart. It doesn’t continue to the receipt and download section. I hope my card wasn’t billed at all, because I tried to buy it a couple of times. Please help ! :cry: