Hello, trytrytryagain. 

You need to be the admin to change the correct email address of the company file. If not, I suggest contacting our QuickBooks Desktop Support Team. Our support team has the tools necessary to dive into your specific account and also screen share with you if necessary.   

Here's how you can contact our customer support: 

1. Open QuickBooks.
2. Go to Help, then select QuickBooks Desktop Help.
3. Select Contact Us.
4. Give a brief description of your issue, then select Let's talk and then choose a way to connect.  

Feel free to use these links in case you need more info in handling your user roles:  

•  Create and manage roles in QuickBooks Desktop. 
•  Create data level permissions in QuickBooks Desktop.

In the meantime, if you have any other questions, feel free to post down below. Thank you for your time and have a nice afternoon.