I took the advice of another subscriber and entered a 0 as the AGI for 2020 when asked to re-enter the number after a failure/s. This same failure occurred in 2019 according to some other posts I read.
It worked using a bogus 0 instead of the real 2020 AGI that I got from the IRS submittal.
Also my state submittal worked just fine after that and got accepted also.
Hope it works for you.
