Let's remove the zero amounts on your reports, leeg1!
There's a drop-down setting in the report called Show non-zero or active only. You can select Non-zero from there to remove the accounts with zero balances. This setting is not available on all reports though. However, there's another option to remove the zero amounts.
The other setting is called Except zero amount, which hides the zero amounts, but not the accounts. You see this option when you click on Customise and expand the General section as shown in the screenshot.