I tried to download one pack which I had in my "wish list" for a while. I was able to complete the order for $0.00. However, I haven't yet received an email with a link to actually download the content. So far it's a bust for me. Waiting...
Sign in to your account, go to your page, at left side choose my library and download from there. (right side of the items titles).
If order is 'pending', just wait until it's completed.