If you are an advantage member then both the Mac & Win downloads are in your account ...
See this TurboTax support FAQ for checking or updating the Advantage subscription - https://ttlc.intuit.com/questions/1900547-how-do-i-update-or-confirm-the-info-in-my-turbotax-advanta....
Use this website to check on any orders or payments - http://turbotax.intuit.com/commerce/orderstatus/orderstatus.jsp
If a 2017 order is shown on the order status website, then sign onto your download account with your Advantage user ID and password to download the software - https://shop.turbotax.intuit.com/commerce/account/secure/login.jsp?pagecontext=download
If the MAC is not there then ...
Use the following TurboTax
website to contact TurboTax customer service/support. Submit your
question/problem during business hours and then use the
option for Call (a phone number will be provided for Call) to speak directly
with a TurboTax agent -
https://support.turbotax.intuit.com/contact/