Third time's a charm. The workaround you provided worked! Evidently the IRS has not updated a lot of records to reflect the 2019 filing (covid related?), thus they don't have the 2019 AGI in it's system and cannot match the records if you input an AGI number in. I tried inserting a 0 myself, and that failed, but letting turbo tax input it for you by checking the box that you did not file in 2019 will work.
