Hi there, kelly!

Let me share some important information with you.

In QuickBooks Online (QBO), the open balance section on your supplier screen composes of the total amount of bills/payments as well as the overdue that was created on that specific supplier. 

The overdue balance, on the other hand, are bills that was reached the set due date.

Based from your screenshot, it stated there that there were four (4) open and three (3) over due bills. Let's go ahead and check the supplier balance report and see if they are the same. 

Also, let's make sure that the bills that need to be paid are marked as paid. This will then organize the report on your QBO account accordingly.

Please refer on this link for more information: https://community.intuit.com/articles/1503073-customize-vendor-reports

Keep me posted if you have any questions or clarifications. I'm ready to help!