Are the children older than 16? Do they only have ITIN's and not Social Security numbers?
If neither of those is correct---then you have entered something incorrectly in MY INFO for them.
Make sure you have entered your child as a dependent in My Info, and that you have entered the child's Social Security number. Careful— do not say that your child’s SSN is not valid for employment. If your child was born in 2024 make sure you said he lived with you the whole year. There is an oddly worded question that asks if the child paid over half their own support. Say NO to that question.
Sometimes it helps to delete the dependent and enter them again.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.