I thought that as well, but I can only click "I want this" which then leads to putting in credit card info. So I do not know what to do at the moment with that. I sent a question to the owner through their site, so Ill just have to wait and see I guess.
EDIT: Ok, so their was actually a download link in the email they sent when I first got it that also had the number. I forgot it had a download link. I had to go dumpster diving in my Gmail trash for it.