Hello rwipf2992-gmail-,
Welcome to Community! Having a supplier showing a balance, after payments were made, can be a little concerning. However QuickBooks Online has the features you need, to ensure your books are balanced. I would be glad to assist!
This may be related to a duplicate expense/bill, or unapplied payments. Unapplied payments can happen when you don't enter the corresponding bills, or if a duplicate entry has been created. I recommend reviewing the A/P Aging report to narrow your search. However, your time is valuable and I feel you would benefit from contacting our Customer Care team outside of this forum. With your consent, they can connect with you in real-time and ensure you're able to accomplish your QuickBooks goals as soon as possible!
If you have any other questions, feel free to reach out. We would be happy to help!