Are you trying to claim the AOC on your return or the student's?
Generally students under 24 aren't eligible for the refundable portion, on their own return.
If it's your return, that is weird; that you would get the $1500 non refundable portion only. The refundable portion ($1000) is shown separately on line 29 of form 1040 (it was on line 18c on the 2019 form). It that's not it, Delete the student and start over. Go through the entire education interview until you reach a screen titled "Your Education Expenses Summary". Click delete next to the student's name. You'll then get the "Your Education Expenses Summary" screen again. Click the "Add a student" button.
