I downloaded TurboTax for Mac from Amazon. Now I need to use Windows. The TurboTax CD/Downloads page would not accept my Activation key. How can I get the PC version?

I tried https://accounts-tax.intuit.com/turbotaxdesktop which took me to
https://shopping.turbotax.intuit.com/unified/downloads/myaccounts?route=MYACCOUNTS&cgcview=downloads