Zend certified PHP/Magento developer

Permissions to add/edit customers is missing despite administrator role

In my Magento 2.4.2 shop I’m not allowed to add or edit customers. Although I’m logged in as an administrator.
When opening the customer or sales page, all customer information are obfuscated.

enter image description here

When I try to create a new customer, I get the following message:

Access Denied
You don't have permision to view this page.

Does anyone know how to fix this?