Due to the recent discontinuation of the POS system, QuickBooks Online (QBO) integration is no longer supported, Van.
You can consider using a third-party application to restore this feature. You can explore apps that are compatible with QuickBooks Online to find one that meets your needs.
Here’s how to find compatible apps:
- Go to the Apps menu.
- Select the Find Apps tab.
- Choose the application that suits your preferences.
- Click Get app now.

Alternatively, you can manually upload transactions from your POS system to QBO.
I'll share this article in case you want to add transactions manually while you're working in your account register in QBO: Manually add transactions to account registers in QBO.
Lastly, If you want to maximize the benefits of your QuickBooks account, equipping you with valuable tools and insights to better manage and optimize your account. You also can try using our QuickBooks Online Advanced training.
Feel free to reply if you need further assistance.