Why does it say my child doesn’t qualify for child tax credit but everything adds up to where he should qualify

[DoninGA]

If the child is under the age of 17 in 2023, then you need to check your answers when entering them as a dependent.  You should have indicated that the child lived in your home for the Whole Year.  That the child did Not provide over one-half of their own support.  That you did Not check the box "Not valid for employment" when entering their Social Security number.

Click on My Info on the left side of the online program screen.  Edit the dependent.  If your answers were all correct then delete the dependent and re-enter.