I just tried e-filing (February 22) and had my return rejected for the same reason- 2019 AGI doesn't match (I have double-checked my 2019 TurboTax return as well as through IRS website online.)
EDIT- I just read the following TT support article:
https://ttlc.intuit.com/community/rejections/help/what-if-i-entered-the-correct-agi-and-i-m-still-ge...
It mentions that if you filed late last year after mid-November or your return was processed after that time, try entering 0 as your AGI. I filed in early April last year, but did not receive my federal refund until December.
So I just tried again using 0 as AGI. I'll post back with the result, might be useful info for others who filed on time but still may need to enter 0 as AGI.
