The IRS will shut down e-filing entirely on November 26 to start preparing for 2022 tax returns. After that date, even a tax professional will not be able to e-file until sometime in January.
Even if you are filing by mail, be sure to enter your IP PIN. It should appear at the bottom of Form 1040, to the right of your signature. The IP PIN that you have is for tax returns that you file in 2022. If you don't file until after January 1 you will have to use the new IP PIN that you will get for returns that you file in 2023, even though it's a 2021 tax return.
