8.26.2021 update: Monday last week, I finally got through on the phone to someone at the NJ Division of Taxation (after waiting 45 minutes on hold). The woman was very nice and after quickly reviewing my return, said sometimes upon initial review of a return, they miss the NJ-2210 form (I submitted one). So she sent my issue to another department for review and told me I would get a response in the mail stating the outcome of the review. After 10 days (today), the response came in the mail and said I don't owe anything more! Amazing!! Even though it wasn't a lot of money, I'm glad I don't have to pay anything extra and it now looks like TT did the return calculations correctly. Unless.....of course.....I overpaid..... 🙂
