Resolve Error during registration: Breach of permission: You need permission 'Lists -> Customers' access to this page Please contact your account manager in Web Stores

The cause of the error is that there is a previous default Classic Center role that has been deactivated prior to selecting a new one. 

To fix the problem, user needs to follow the steps below:

1. As Administrator navigate to Setup > Users/Roles > Manager Roles.
2. Check the Show Inactive checkbox.
3. Reactivate all the Classic Center roles by un-checking the Inactive box beside them.
4. Clikc Submit.