Thanks for posting in the Community! May I please know the name of the bank account and the error message you're getting? I would also suggest to contact our support team to check on the status of the reported issue. Here's how to contact us:
Sign in to your QuickBooks Online company.
Select Help (?) at the top right.
Select Contact Us.
Enter a brief description of the issue, then select Next.
Select Start a Chat or Get a Callback to connect to a live support team representative.
Post again in the Community if you have questions. I'll be around to assist you!