Thanks for getting back to us, @XL_Velo.

Since the inventory sales are still not showing after checking it, try signing into your QuickBooks Online (QBO) using a private browser (incognito). There are times that the browser is already full of frequently accessed page resources, causing some unusual responses.

Here's how:

• Press Ctrl + Shift + N (Google Chrome).
• Ctrl + Shift + P (Firefox).
• Control + Option + P (Safari).

Once logged in, pull up the Profit and Loss report again to double-check.

If they're showing, return to your default browser and perform a clear cache to refresh the system. However, if the issue persists, try using other supported browsers.

To learn more information about managing reports in QBO, consider checking out this article for future reference: Run reports in QuickBooks Online.

I'm also adding this article that tackles tracking your inventory in QBO: Set up and track your inventory in QuickBooks Online.

Don't hesitate to leave a comment below if you have any other issues or concerns. I'm more than willing to assist. Have a wonderful day!