child dependent credit

I am doing my taxes and turbotax is showing the side by side comparison of my deductions and credits from 2024 and now 2025.  Last year I received $3000.00 for child and dependent tax credit.  This year it is 0.  I still have 3 kids, ages 16, 18 and 18. (twins) and they live with me.  I have reviewed the entries in turbo tax about each dependent and nothing is different.  Why I am getting nothing?