Hello there, Jim.
You are required to use the Office 365 edition of Excel to use Spreadsheet Sync and log in as an admin user in your QuickBooks Online Advanced, Jim.
Spreadsheet Sync won't load properly in Excel if your computer's default browser is Internet Explorer 11. To fix this, you'll need to upgrade to Microsoft Edge first by installing the required file. Once done, you'll be all set with Spreadsheet Sync.
You can also refer to this link for additional troubleshooting steps in resolving your Spreadsheet Sync issue: Spreadsheet Sync troubleshooting.
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If you have additional questions about Spreadsheet sync or any related concerns in QBO, don't hesitate to reply to this post.
