Your 2016 AGI was only needed if you were e-filing a 2017 return before the e-filing deadline for 2017 returns. Since e-filing for a 2017 return is permanently closed, you no longer need your 2016 AGI. Your 2017 return can only be filed by printing, signing and mailing it.
As epo39b already pointed out--only 2017 software can be used to prepare your 2017 return. If you used the current online software that is a big mistake. Post back for further help if you did that.
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 received the return.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
