2024 federal taxes paid with extension not flowing to Schedule 3

[user17600462889]

I have entered the payment I made with my extension (under Federal Taxes/Deductions and Credits/Estimates and Other Taxes Paid/Payments with Extension/2024 federal taxes paid with extension) and it is not flowing to Schedule 3.  It is also not reflecting any changes in the "Federal Tax Due" box.   As an experiment I changed that number to something else and the "Federal Tax Due" did not change.

I tried 3 times calling your support line and was disconnected each time. 

Please advise what I can do to get this entered into my tax form correctly.

Thanks.