Turbotax is wrong about my boyfriend qualifying to file as Head of Household, according to the IRS ITA tool. How can I make it let me file as HoH? Only allowed 150 chars

We lived together all year. I provided all monetary support. Neither of us is married. He made less than $5200. He is not disabled by government definition. He has a valid SSN. Cohabitation is legal in our state, which is not where we receive our mail. Cohabitation is also legal in the state we do receive our mail in. He is older than 24. Turbotax won't let me file as Head of Household. What gives?