Access your downloads here
https://shop.turbotax.intuit.com/commerce/account/secure/login.jsp?pagecontext=download
https://ttlc.intuit.com/community/tax-topics/help/activating-turbotax-cd-download-software/00/852971
What do you mean you downloaded it? It wouldn't let you download without paying. After you downloaded it did you install it? Where are you stuck? Are you stuck in the Online version?