What software are you using? Are you trying to use the current online program? The online program is only for a 2023 return -- no other year.
Why not simply print another copy of the return you think you filed by mail and send it again? And...again...use a mailing service like certified mail to track it and make sure it is received by the IRS.
**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.**
