My 3922 box 1 shows a grant date of 1-4-16, but my trade confirmation shows an offering period of 1-1-16. I sold the shares on 1-4-18, is this a qualified disposition?

ESPP My employer counted this as qualifying because the offering date of 1/1/16 and the selling date of 1/4/18 is > than two years.  When I enter it into turbotax it uses the 3922 grant date of 1/4/16 and calculates it <= to two years, thus it says disqualifying.  Which way is correct?