Update #2. I accessed my 2019 IRS Record of Transaction online and sure enough my AGI matches to the penny. Really looks like there is something wrong on the TurboTax side. So, so frustrating.
Update #3. I have tried entering "0" for the AGI and...my Federal Return was accepted. Still waiting to see what happens with the State (VA) return. So...if the actual, accurate AGI (as verified by the IRS) doesn't work...try 0. That trick didn't work for me last year, but *appears* to have worked for the Federal return this year.
