Although you think you used TT's 2018 software for a federal return, that software is outdated and cannot be updated. The results you got may be inaccurate. Downloads and updates are no longer available for TT's 2018 software. And it is impossible to e-file a 2018 return. A 2018 return can only be filed by mail.
And....just so you are aware, any tax refund for 2018 has been forfeited. It is too late to receive a 2018 refund. If you owe tax due, you do still owe it with late filing penalties and interest, though.
**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.**
