You are correct, if your husband's FSA is not eligible for one of the exceptions, you can't contribute to an HSA for those months. In that case, mark yourself as having no coverage for the months where you had the FSA. TurboTax should then calculate the same over-contribution and report it properly once you tell the software that you will withdraw/have withdrawn the amount.
If you previously reported that you had coverage all year, you can change your answer to I had different plan types at different times of the year on the Were you covered by an HDHP in 2021? screen. You can then select your coverage for the months you were not married and select None for the months that you were covered by your husband's FSA.
