I tried that already. The message I saw was that my COVID-19 stimulus check was sent to my old bank account. Now, I have to wait several weeks or months to receive a paper check in the mailbox.
According to the IRS website, once the deposit has been made, there is no other resource to update another bank account until the tax payer files their taxes during the next tax year and enters the new bank account information then.
The link you mentioned might allow someone who has not yet received the stimulus payment, many weeks later, to enter the IRS website and verify or if necessary, update their bank account information.
