One of two things happened:
1. Your download email was sent to your junk folder
2. Your order was declined
Please note our shopping cart issues order numbers for declined orders, so having one doesn't mean your order went through.
Be sure to check your junk folder (sometimes called a spam folder). "Missing" download emails usually end up there. If you still can't find your download email, send an email with your order number (e.g. HEALU-1234) to email@example.com. We'll resend the email. Be sure to read this article about saving your e-books.