Back Door transfer to Roth

I'm completing my 2020 taxes.  This year I had a back door conversion from a traditional IRA to a Roth IRA for both my wife and I for $7,000 each.  I answered all the questions to the best of my knowledge, however, the amounts are not filling in correctly for lines 16 & 17 for Form 8606.  I was told by a tax expert that the amount of $7,000 should appear on each of these lines but they are blank.  I'm not sure what questions I may have answered incorrectly so I am looking for some advice as to make the necessary adjustments to my taxes.  Please advise.