Let's try applying the credit memo in a private browser, miradorit.

There are instances that the browser we're currently on is not working. Using a private browser can help us continue our work inside QuickBooks.

Here's how to enter the credit memo:

1. Click the Plus (+) icon.
2. Under Customers, select Credit Memo.
3. Enter your customer's name, date, product/service, amount, and quantity.
4. Then, Save and close.

Once done, you'll have to apply the credit memo:

1. Select the Plus (+) icon, then Receive Payment.
2. Select your customer's name.
3. Put a check mark under Outstanding Transactions and Credits field.
4. Click Save and close.

You can go to your customer profile to check if you've successfully linked the credit memo.

Another way to check your customer's balance is to run the Customer Balance Detail report.

I'm always around if there's anything else that I can help you with. Have a good day!