My bank account shows there is one transaction to review but there's nothing there when I click on "all transactions".

I can think of a reason for your banking issue in QuickBooks Online, @valerie47. I'm here to help you sort things out.

The stored cache for a long period of time sometimes affects the behavior of the browser. You're likely experiencing a browser-related issue. 

I recommend performing some basic troubleshooting procedures to isolate this. Start by logging in to your QBO account using an incognito page. Here are the shortcut keys to open it:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Shift + N
• Microsoft Edge: Ctrl + Shift + N

If the message is gone, then you'll need to clear your regular browser cache. This helps resolve any unusual browser problem.

Otherwise, use another compatible browser.

If you're all set, feel free to browse these helpful modules about handling bank transactions and resolving balance discrepancies each month in QBO.

• Categorize and match online bank transactions in QuickBooks Online
• Reconcile an account in QuickBooks Online

Keep us updated so we can help you further with banking or QuickBooks in particular. We're here to back you up any time. Stay safe.