The only way to finish it now is by using the CD/download on a full PC or Mac, not on any sort of mobile device. And, e-filing will not be possible now using TurboTax. The return will have to be filed by mail.
https://ttlc.intuit.com/questions/1900990-how-do-i-file-a-prior-year-tax-return
Or you can try to use the IRS Free File site if you meet the criteria to use the free software.
-Use this IRS site for other ways to file for free. There are 8 free software versions available from the IRS Free File site
https://apps.irs.gov/app/freeFile/