I can share some information about generating a report in QuickBooks Online (QBO), @ebisme.
Can you tell me more about the report that your client is trying to generate? Please take note that reports filtered by customer, vendor, or account don't have the Show non-zero or active only option or the except zero amount box.
If you're using the QBO Simple Start version, the said options are unavailable. That said, you'll need to upgrade either to Essential, Plus, or Advance.
You can check this comparison of each version that we have. For more details, check out this article: Upgrade your QuickBooks Online subscription.
From here, you have the option to save the report's current customization settings. To do this, you can refer to this article for the detailed steps: Memorize reports in QuickBooks Online.
Let me know if you have other reporting concerns or inquiries about managing accounts in QBO. I'm just around to help. Take care always.
