You are in an online account. in home page MyTurboTax The download is link is top right corner in blue Access CD/Download Software...https://turbotax.intuit.com/commerce/account/secure/downloads_unlocks.jsp. Once you download the software, you no longer need to sign into your account.
the download is not listed here!
where did you purchase it from then? If you purchase in your TT account, that is where it would be.