Can anyone tell me why turbo tax approved me for $1764 Tax Refund and I only received $1125.

The error message said the ssn was wrong, or the dependent exceeded age limit, or we made $75000 gross income. I double checked and the SSNs on the return are correct, my only dependent is 17 month born 3/30/21 and I only made like $12500. I believe I should amend the return but if all of my info is correct what do I do?