Hello mlane1060,
This can happen if the connection between your bank's website and QuickBooks is interrupted suddenly. We can update the Banking page manually.
1. In the Banking page, click the Update button.
2. Enter your Multi-Factor Authentication Credentials (MFA).
3. Click Continue update.
If it doesn't update your bank transactions, I'd recommend contacting your bank. They might have an ongoing page maintenance that's causing an interruption when updating the Banking page.
You might also want to use a Webconnect file to import your bank transactions as an alternative for Online Banking. You can check out these articles for more information:
You can provide additional information and screenshots if you need more assistance with this. I'll be around!