You misunderstood, a tax payment cannot be deferred. Taxes owed were required to be paid on or before April 15, 2024 to avoid a failure to pay penalty.
If you cannot pay the taxes owed at this time then you should apply for a payment plan from the IRS.
Go to this IRS website for a payment plan application - https://www.irs.gov/payments/online-payment-agreement-application
