My 2020 tax return was filed on time and was accepted before April 15. The IRS website says it was processed in May. I tried 3 times to get the IRS to accept my 2021 efile. Finally, even though my AGI was correct, I placed zero on that line and used the IP Pin given to me by the IRS. My return was finally accepted.
If you find that everything is correct on your tax return and you are still getting rejected, try using zero for the AGI.
