How do I finish a prior-year return that I started in TurboTax Online?
If you started your 2015, 2016, or 2017 return in TurboTax Online but didn't finish it before the shutdown, you can always start over in the TurboTax CD/download software, available for purchase at TurboTax.com.
Another option is to transfer your incomplete return to the CD/download software so you can finish it up. You will need the login you used on your prior-year return (if you don't remember it, try account recovery).
Once you have your login, here's how to transfer your partially-completed return to the desktop software: