The 4 2022 estimated tax payment vouchers are NOT to pay the 2021 balance due ... they are for 2022 estimates.
Check your return for the filing instruction page to see how you chose to pay the balance due :
If you choose to mail in the payment you should have a 1040-V for the 2021 balance due in your packet.
Or you can pay the IRS directly online WWW.IRS.gov/payment
