Received IRS notice even after payment of taxes

[pjd0501]

Hello,

For the year 2020, I owed IRS money. My Tax consultant e-filed it but provided wrong account number. The payment was returned but I paid IRS through Direct Pay on April 30, 2021 and it was posted on May 3, 2021 (Tax deadline was May 15, 2021 due to COVID-19). I received confirmation and can still access it on IRS direct pay website using confirmation number

Today I received CP 501 notice stating that I need to pay penalty of ~$600 because I owed them money. I am not sure what is this penalty about? How should I proceed here? 

P.S. The notice date is July 5, 2021 (which is a week away from today)!! Could this be a scam? 

Thank you!

[rjs]

You should go back to your tax consultant and have the consultant respond to the IRS notice on your behalf.

[Mike9241]

go back to your consultant. this could be about an economic impact payment that the IRS records indicate you got but was not entered in your return.