TurboTax does not support tax year 2017. It is to late to file a 2017 tax return for a tax refund.
If you have taxes owed then you will need to file the 2017 return since penalties and interest are accruing for the unpaid taxes.
You may be able to purchase the 2017 software from a reputable online retailer such as Amazon, Best Buy, Stapes, Walmart, Costco, etc.
Or you will have to find a local tax professional to assist you in completing the 2017 tax return.
The 2017 tax return can only be printed and mailed, it cannot be e-filed.
