I posted on this over a month ago.  I have given up talking to support on this issue, as they insist it is correct even though I did a screen share and duplicated same numbers for 2019 and 2020 and got different results.  I even told them which line of the program is pulling the incorrect information and how to fix it but they insist nothing is wrong!

I am now doing the calculation manually by using the worksheet in Publication 936.