Yes. you can use the 2017 desktop software you purchased to prepare your 2017 return. In fact, that is what you have to use. Online preparation and e-filing for 2017 are both permanently closed. You will need to print, sign and mail your 2017 return.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS and/or your state received the return.