For us to better assist you, could you please verify the specific bank account name that was not updated in QuickBooks Online?
Also, as a start, we can perform some basic troubleshooting steps to isolate the bank feed issue you've encountered. Here's how:
Click on the Banking tab.
Click on the bank account affected, and click on the pencil icon.
Click on Edit sign-in info.
Manually enter your user id and password for your bank account.
Click on Save and connect.
Check if the bank feed updates this time. If the issue persists, open a new tab and log in to your bank's website to check if your login credentials work.