YOu will have to download the .tax2017 tax file and use the desktop version of the program now. The online program for 2017 is closed permanently. You may be able to call TurboTax support during normal business hours and get them to put the Cd version in the downloads section of your account, since you've already paid for the online version.
https://support.turbotax.intuit.com/contact/ and work through that site. Note that you will NOT get a phone number when support is closed. So don't bother trying until in the morning.