Hello there, BlessedTT.
I'd like to help and make sure you apply the credits to your invoices.
You can still apply the credit even if your customer already receive and paid the invoice. I'll show you how:
- Click on +New.
- Choose Receive payment.
- Select the customer, then the credit and the invoice.
- Once done, select Save and New or Save and Close.
After you apply the credit to the invoice, you can either send the customer the refund amount or apply it to the next invoice.
Here's an article that you can use as your future reference: Record a customer refund in QuickBooks Online
Post your concerns or click the reply button for any follow-up questions about credits. I'll keep an eye on your response. Have a great day!
