If you choose to use TurboTax to complete a 2017 tax return then you will need to purchase, download and install on a personal computer one of the 2017 desktop editions from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/

A 2017 tax return can only be printed and mailed, it cannot be e-filed.

I also paid for the 2017 edition.  I downloaded the file.  I click on the .exe file and it doesn't do anything.  The desktop pointer icon just sits there and spins indefinitely.  I waited 10 mins for it to work and nothing happened.  The only way to get it to stop was to restart my computer.   I went back and re-downloaded it again.  same results.