I would like to configure amember to sell digitial products. The customer would come to the site and select which digitial products to purchase. When the customer logs into their account, he would see a list of products that was purchased. He would then be able to select which product to download. The customer would be able to download the products purchased for 1 year. I tried doing this and when the customer logs in, the download is automatically taking place. I would like the customer to select the product to download. How is the best way to do this?