Let me share an insight about the user access permissions in QuickBooks Online.
We haven't received similar issues reported. The Company Admin has access to all areas of the company file, while the Master Admin can grant a user access to the company's information.
You may want to ask the Master Admin to check your user access rights in QuickBooks Online.
Here’s what the Master Admin needs to do:
Click the Gear icon and select Manage Users.
Highlight the user's name, click Edit.
Under Edit user settings, go to User type.
Under Limited, make sure to select the correct option (Customers or Vendors).
If you’ve confirmed that the permissions are set up correctly, let's perform basic troubleshooting steps to check whether this has something to do with your browser. You can use an Incognito browser or a new private window.
Here's how to open a private window in different browsers: