I had the same issue for my 2023 returns and was preparing to mail in. But it is Sunday, and while I wait for Monday, I kept attempting to submit electronically and eventually got it to work!
First attempt rejected and TurboTax indicated that it was my spouse's AGI that was a mismatch. I entered a zero as recommended by several folks, but I got rejected a second time. There doesn't appear to be a limit to the number of attempts to submit, so I kept trying.
I tried adding the "00" after the decimal point (bc I saw that the IRS records include ".00") and resubmitted.
This was also rejected, but there was something different. This time it indicated that my own AGI was not matching what the IRS had on file. I added the zeros following the decimal again, but it was reject.
Finally, I entered an amount of zero for my AGI, and this was accepted.
It worked for me, so I hope it helps someone else.
