I appreciate you taking the time to troubleshoot the issue with sending your employee's time to QuickBooks Online, btconcrete. Since you're still encountering an error with syncing approved time, this requires further review. I recommend contacting our support team for further assistance. Allow me to provide you the steps below.

Here's how:

1. Log into your QuickBooks Online account.

2. Click on the Help button located at the top of the page.

3. Navigate to the Search tab, enter your query, and press enter on your keyboard.

4. Select Contact Us.

5. Under the Callback option, click on the Have us call you button to input your details.

6. Finally, choose Get a Call to receive a callback from support.

For a comprehensive guide on obtaining assistance with your QuickBooks product or service, check out this article: Get help with QuickBooks products and services.

For your future reference on how to create, edit, delete, approve, and reject timesheets, or insert a break for your team members or crew in QuickBooks Workforce, open this article: Manage timesheets in QuickBooks Workforce.

Feel free to return here if you still have questions about submitting your employee's time in QBO. We'll provide prompt assistance. Have a nice day ahead.