I have had the same experience. Rejected e-filing for the first time since preparing my forms with Turbo since 2016. Suddenly rejected because of PIN numbers and because my prior AGI (adjusted gross income) from prior year's 2020 filing did not match IRS records. I looked up a help section on AGI and discovered the possible reason for my rejected e-file. One year ago, due to a mistake on my part on my first return, I filed an amended return within days and it contained an updated AGI because of added income. However, I learned this year that I should not submit have submitted last year's amended (and correct) AGI, but instead the originally filed (incorrect) AGI in order to match the IRS records of the AGI on my original (incorrect) return. This, to me, seems like a major flaw and taxpayers should be sent warning messages from Turbo about this if they must file an amended return.
