After you file

OK ... first if the filing instruction page said you choose to mail in the payment and there is a 1040-V in the PDF then you need to mail in a payment OR  go online with the IRS to make a debited payment.

 

IF  you still think that is incorrect then review the FILE tab and check your choice in STEP  2 but do NOT make any changes on that screen ... LOOK do not touch.  Any changes you make will NOT go to the IRS.