I have put in the incorporation date of 3-02-2020.  I also put the S election date of 3-02-2020.  It comes back with the following:

Effective date of S Election entered is later than the beg of the tax year.

If I change the S election date to 1-01-2020, it says S election date cannot be before date of incorporation.  All other returns I've done through the years had no trouble with these dates.