I appreciate you for laying out the details of your concern, @Elicris. I'll share some insight to help you verify why the Chart of Accounts (COA) balance does not match with the Balance Sheet report.

The first thing we need to consider is the reporting period of the Balance Sheet report, which must be within the same range as your COA.

Then, we have to make sure that we select the correct accounting method (Cash or Accrual) for the report.

If the issue persists, can you please provide us with some screenshots of the mismatched Balance Sheet report balance and the COA balance?

In addition, you'll want to personalize the format for your reports. Feel free to customize it on QuickBooks Online (QBO). This article will give you details on how: Customize reports in QuickBooks Online.

Fill me in if you have more queries about managing your reports in QBO. I'd be glad to assist you further. Take care and have a great day!