I'd be glad to help point you in the right direction regarding changing the email address for direct deposit.
I'd like to check this for you and get it taken care of myself. However, I won't be able to check your direct deposit account without asking for sensitive information. I don't want your detailed information displayed here for security reasons since your direct deposit account is confidential, and we value your privacy.
I'd recommend contacting our phone support for assistance. They can take a look at your account in a secure environment and ensure your email address for direct deposit will change successfully.
To reach us, please follow these steps:
You may find this article helpful: https://community.intuit.com/articles/1775451-direct-deposit-for-online-payroll.
Keep me posted if you need anything else about the direct deposit in QuickBooks Online. I'll be here to help you out.