Let me help you update your accounts in QuickBooks Online (QBO), todd25.
May I know the financial institution you're trying to update? This helps us to check if there's a reported case related to your concern.
We can update your bank account manually to refresh the connectivity between your bank's website into your account.
- Click Banking on the left panel.
- Select the account from Bank and Credit Cards drop-down menu.
- Click the Update button.
- If asked, enter your Multi-Factor Authentication (MFA) credentials. Then select Continue update.
The update can take a few minutes. Cases like this, QuickBooks Online notifies after updating your accounts to get the latest transactions.
For more details about this one, you can check out this article: Manually download online bank transactions in QuickBooks Online.
If you're referring to updating your bank credentials, we need to log in to your bank's website first to apply the changes. Then, sign in your QBO account and to update the credentials. Just follow the steps and details in this article: How to update your bank account sign-in information.
Just in case you don’t see your recently downloaded bank transactions in QBO, you can check out this article troubleshoot the issue: What to do if bank transactions won’t download or there's a bank error.
I've got a link here that provides you with articles about managing your bank transactions: https://quickbooks.intuit.com/learn-support/en-us/banking/07?product=QuickBooks%20Online.
I'm just one reply away if you need a hand with reconciling your accounts or any QBO related. I'm always here to help. Keep safe always.