Yes, according to the guidelines you should have received $3,400 if you claimed two dependents under age 16 on your tax return. It is unlikely you will be able to do anything about it until you file your 2020 tax return, when you will receive a credit for the additional $500 per dependent.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"