Sorry if paying for a 2018 online return didn't unlock 2017 you need to contact support at the link above. They only give you a phone # during office hours, which are open until 5pm today (8pm Eastern).
What is the Turbo Tax Phone number
https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
And did you see this article? How to finish a prior year online return https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-finish-a-prior-year-return-that-i-...
