Hello SGilljp,
Here are few things that you can try:
On your Master Admin account, click on the Setting gear on the top right hand corner of the screen.
- Click on Preferences
- Click on Users on the left hand pane, once you click on the Users, you will see the list of users on the right side pane.
- Click on the User you want to set the permissions. Once you click on the User, click on Manage User Permissions & Subscription. Once you click on Manage User Permissions & Subscription, click on Customer management for Quickbooks and make sure you have all the Access, View, Customize and Manage checked(See the screenshot below).
In case you still have any issue, feel free to contact us on our support line 1-888-925-6238 option 2 for support.
-Inder