Auto Apply credits to all open invoices

Hi there, 

You've come to the right place for help. I'll be happy to share more info on this. 

At this time, the option to automatically apply credit to open invoice is unavailable. You'll need to assign the credits to the invoices. When you receive a payment for the invoice, you'll see a pop up asking if you want to use existing credits. 

Let me know if you have further questions. I'm here to help.