HSA Prior Year Contribution

My last contribution to my HSA for 2023 was deposited in early January 2024.   I recently received a form 5498-SA dated for 2024.  TurboTax identifies this amount as an excess contribution for 2024 (since I was not under a high-deductible plan during 2024, but I was in 2023).  How do I correctly designate this amount as a prior-year-contribution?  (What am I missing?)  Thank you!