Hello there, @Lynn918.

The vendor credit will be added to the payment once you check it when paying the bills. If the credit is not yet to be used, I suggest unchecking it. Then only select the outstanding bills to pay.

Also, can you provide screenshots for us to further check your concern? I'd appreciate any information you can add to help determine the main cause of the issue.

Feel free to browse this article for more information about vendor credits: Manage Vendor Credits.

For more references, here are articles to help you track all money you've paid to a vendor for a particular date range:

•  Run a report with vendor totals.
• What is the difference between bills, cheques, and expenses?
• How do I handle vendor credits and refunds? 

Let me know if you have other questions about QuickBooks. I'll be right here to help you out. Have a great day.