It looks like you're referring to the Accounts Payable ageing report, Leona-young.
We have a few things to check. First, let's make sure the report's date is correct. This way, it will provide you with an accurate information.
Then, it could be some bills are already paid that's why the amounts vary. We can check the supplier's transaction list to verify.
Please get back to us if you need something else. Have a nice day!