Thank you for posting here in the Community, get2gripz.
For the category of missing sales receipts, could you confirm if you are referring to the bank's sales receipts?
If yes, make sure that you have to make it active in your bank transactions. If you have already made it active and it still does not show up, I would recommend some basic troubleshooting. For category details when creating sales receipts that is only available for expense and bill transactions.
To troubleshoot your issue, let's log in to your QuickBooks Online account using a private browser session. This will help us isolate the problem.
Google Chrome: Ctrl + Shift + N
Mozilla Firefox: Ctrl + Shift + P
Safari: Command + Option + P
Microsoft Edge: CTRL + Shift + N
If you encounter the same issue while using a private browser, please switch to a supported browser or clear your regular browser's cache to start fresh.
I've already added this article to help you learn how to group your products and services in QuickBooks Online.
If you have any further questions or concerns, please leave a comment below. I am happy to continue providing assistance and support. Best regards.