"Your Earned Income Tax Credit of $3,322 is based on your filing status as Head of Household, your three qualifying children (1, 2, and 3), and your adjusted gross income of $43,xxx. Your income is above the level to receive the maximum credit, so your credit is reduced." - How is $43k greater than $59k?
Earned income credit is calculated on a bell curve. The fact that you are HOH and have three children does not mean you receive the maximum amount. See the EIC table in the IRS publication 596---look on page 34 for the amount for your income with 3 kids and HOH status.
https://www.irs.gov/pub/irs-pdf/p596.pdf
https://www.irs.gov/credits-deductions/individuals/earned-income-tax-credit/use-the-eitc-assistant
Look at your 2024 Form 1040 to see the child-related credits you received
PREVIEW 1040
Child Tax Credit line 19
Credit for Other Dependents line 19
Earned Income Credit line 27
Additional Child Tax Credit line 28