Thanks for getting back to me, teresa-btmilner-.

Upon further research, you can complete a stop check request. According to the QuickBooks Bill Pay article, "If the bill payment is in “scheduled” status: Go to the bill payment page, and select Cancel. If we have already processed the bill payment, the check is already printed and sent. Please sign in to your QBO account, select Help, and follow the steps to contact us. We recommend you contact the vendor and let them know you voided the check. Once voided, you may schedule a new payment directly to the vendor using the Bill Pay service."

Here's how you can get in touch with the QuickBooks Online Support Team:

1. Click Help (?).
2. Select either tab to get started:
   - Assistant: Get quick, personalized answers. Select a suggested option, or type a question or topic you need help with. If you decide you need further help, you can still Talk to a human.
   - Search: Search the QuickBooks Online knowledge base directly, or select Contact Us and choose a way to connect with us:
       - Start a chat with a support expert.
       - Get a callback from the next available expert.

The following article provides these steps if you ever need them again in the future: QuickBooks Online Support

I'm only a comment or post away if you have any other questions.