Trying to correct confirmed transactions that went to wrong credit card account . I hit unmatch and get an oops message Not sure what to do?

Look no further, @warwick.

Let's perform some troubleshooting steps to determine if this is a browser issue. To start, let's run your QBO account in private mode. The following are the shortcut keys you can use:

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

Once signed in, perform the steps you took before receiving the error. If this works, clear the cache of your regular browser to get a clean slate. You can also use other supported browsers if private mode browsing doesn’t work.

For your reference in categorizing and matching your transactions in QuickBooks, see this article: Categorize and match online bank transactions. 

Then, to make sure your real-life bank balance matches what is in QuickBooks. Please head to our Reconciliation hub for the step-by-step guide.

If you need further assistance with accessing your QBO account, please post a response below. I'm always here to help you. Have a good one.