I keep getting a fake explanation that daughter supported herself in 2023. She doesn't work yet. Why won't Turbo let me claim my biological child (16), whom I support?

recheck your answer to the question about who provided her support. the question is did she provide more than 1/2 of her own support?  the answer based NO

there is also a question about you providing over 1/2 of her support which should be YES

That was exactly right. I misunderstood the question. Thank you for your help.