Ok ... just a thought. I have had no issue in my private practice (as a tax professional) with using the 2019 EIC even if they were not clients in 2019 and I had to enter the info myself instead of having it transfer into the 2020 program.
So those who have seen this message is that what happened? Did you enter in the 2019 earned income amount yourself instead of it being transferred automatically from the prior year return? If so that would make perfect sense in a DIY program ... basically the IRS is not believing your entries in this matter so they are wanting the return to be mailed in so your figures can be verified. Just an educated guess ... could be wrong.
