Thanks, I tried and failed: Turbotax premier CD version tells me "Your signature date must be on or after 01/01/2021 through 12/31/2021" when I tried to sign today's date. Looks like someone had the same issue trying to amend 2019 tax return: https://ttlc.intuit.com/community/after-you-file/discussion/re-what-signature-date-should-i-use-to-e.... However your link does say I should be able to for 2020 and onwards, so not sure what I should do here.
