Hello there, @Ami1.
There are several possible reasons your Balance Sheet by Class and Profit & Loss by Class report were not showing balance.
To fix these, let's do the following troubleshooting steps:
For additional insights, you may check out these articles:
Lastly, a screenshot of your Balance Sheet and Profit & Loss report showing an unbalance net income in would be very helpful.
Keep in touch with me if you have other questions about running Balance Sheet report in QuickBooks. I'm always here to help.