Good morning, @Grimayoj. 

I appreciate you asking additional questions about using the Spreadsheet sync feature within your QuickBooks Online. 

Have you used the steps listed in this guide? Get started with Spreadsheet Sync for QuickBooks Online Advanced or Accountant

The guide provides details on how to get started with the feature, create spreadsheet report, add or edit data to your QBO Advanced company, and more. 

I'll be waiting for your response!