Hi there, cindy114.

Welcome to QuickBooks Community. I'll provide details about how syncing data works in QuickBooks Online.

Syncing transactions or data to QuickBooks Online depends on the 3rd party application you're using and how it receives data. That said, I suggest contacting the app provider so they can investigate why your orders aren't syncing over to QuickBooks.

Please refer to this article to see different information on how you can import your customers, suppliers, products and services, invoices, bills, or journal entries in QBO and how it works: Common questions about importing data to QuickBooks Online.

I also recommend visiting our QuickBooks Blog. This way, you'll be guided with updates and newly released features in QuickBooks.

If you need further help with this topic or anything about QuickBooks, let me know by adding a comment below. I'm always here to help. Have a good one!