Why can't I change the customer statement format from detail to single line items?

Thank you for reaching out to us, @slbgolfing. We are thrilled to see your first post in our Community space. It's our pleasure to provide you with information regarding the changing of the format of customer statement QuickBooks Online (QBO). I've got some information to share about this issue.

We are currently investigating the issue of the statement settings disappearing when being modified or accessed in the sales option. Our product engineers are actively working on this matter, but we cannot provide a specific timeframe for when a solution will be available at this time.

In the meantime, we recommend reaching out to our support team so that they can add you to the list of affected users. Please be assured that our software engineers are working diligently to provide a resolution, and we'll keep you updated via email.

To contact support:

1. Sign in to your QuickBooks Online company. 
2. Select Help (?).
3. Click either tab to get started: Assistant or Talk to Human.
4. Search Contact Us,  then Start a chat with a support expert.

Please ensure to review their support hours to know when agents are available. This way, you can contact them at a time that is convenient for 

you.

Additionally, you’ll want to pull up some reports that can give you a snapshot of your business and personalize them to modify the information according to your needs. Feel free to visit these helpful resources:

• Customize reports
• Run reports in QuickBooks Online

Let me know how else I can help you with customizing customer statements in QuickBooks. We've got you covered. Have a wonderful day!