You cannot use direct debit from your bank account to pay the tax due on an amended return. And you can no longer e-file a 2019 amended return. Print the amended return, sign the Form 1040-X, and file it by mail. Enclose a check with the return for the amount that you owe.
Mail it by certified mail with a return receipt so that you get tracking and proof that it was delivered.
The IRS is severely backlogged. Expect it to take 6 months or longer for your 2019 amended return to be processed.
