Home Sale

I sold my main home 07/24/2019. I purchased it and lived in it since 12/08/2015. I owned/lived in my previous home from 06/2010-12/08/2015.  I think I meet the exemption on gains for sale (it was WAY under $250,000 as a single person) requirements for ownership, residence and lookback according to IRS publication 523. However, when I enter sale information into Turbo Tax, it's trying to make me pay taxes on "gain" from the sale as if I didn't meet the exemption requirements. Can you help?