How come information generated by chart of accounts reports does not match information in my customized report?

Let's check the way you customized the report, rampoet.

The filter and sort options can make the data different from other reports. Let's open the report and click on the Customize button. Verify the date if it's correct and the options on the Filter and Row/Columns section. I've added this article on how to customize reports in QuickBooks Online.

I'll be here if you need further assistance. Have a great day!

The Chart of Accounts is normally just a list of accounts you have setup to use on transactions, not a report.  However, I believe in QB that shows the balances in your balance sheet accounts.