This is not live chat. You need to ask a complete question so we know how to help. What are you trying to pay using a debit card? TurboTax fees? Tax due? Something else?
I've already filed federal taxes but did not pay the amount due. Can I still pay using my credit card?
Go to this IRS website if you want to pay the federal taxes owed with a credit card - https://www.irs.gov/payments/pay-your-taxes-by-debit-or-credit-card