2021 is no longer available for online preparation. you need to buy the CD or download the app to a full PC or MAC.
If you started your 2022 return in TurboTax Online, you generally have until October 31 to file your return online, but it may be subject to late filing fees. If your 2022 return is in rejected status, you'll have some extra time to fix and resubmit it to the IRS without being subject to late filing fees. After October 31, 2023, you can't start, finish, or e-file new 2022 returns in TurboTax Online. You'll need to use TurboTax CD/download, and then mail your return. Some exceptions may apply for amending and resubmitting rejected 2022 returns previously filed through TurboTax Online.
