I understand the importance of switching companies in QuickBooks Online (QO), nsnell. 

If you've already followed the troubleshooting steps outlined by my colleague above, I recommend reaching out to our Customer Care Team. They have the necessary tools to review your account and create a ticket if needed.

You can check this article on how to reach them: QuickBooks Online Support. 

Additionally, these resources cover all the details about shifting between company files in the online program: Switch between company files in QuickBooks Online.

Keep your posts coming if you need further assistance besides switching companies in QBO. I'm always here to help. Have a great day!