I am getting a refund and Turbotax won't allow me to efile the 1040x either. The page that says "under penalty of perjury" has a field for "today's date" at the bottom. When I fill it out with 02/25/2023, TT rejects the date as invalid because "Your signature date must be on or after 01/01/2022 through 12/31/2022." I grimaced and put in 12/31/2022 (even though that's false) but it STILL doesn't accept it because the date is incorrect. The Turbotax 2021 program was completely updated before I started the amended return, and supposedly the IRS has been accepting 1040x by efile for three years already, so it isn't as though this is a brand new way to submit amended returns.
