Not able to eFile my 2020 amendment

Trying to eFile my amendment. Ran into this error. Before eFile, it asks me to enter Today's Date. But during check, it forces me to enter a date in 2021. So, I changed it to 3/25/2021. And then during eFile, I got this error. What should I do? Give up?

 
 

Screenshot 2024-03-25 223440.png

To make matter worse. When I click on "Check E-file Status". It says my 2020 Federal Return is Accepted. I clearly stated this is an amended return in the beginning and TurboTax knows it. It was only about 30 min since I attempted. I did not receive any  E-mail about efiling. So I think this is not real.