Подробные видеоинструкции Wordpress на тему: "This server could not verify that you are authorized to access the document requested wordpress":
Authorization required | How to fix it?
how to solve authentication required your connection to this site is not private on wordpress
Wordpress 403 - Forbidden Access Is Denied Error Solutions
What is a 401 Error and How Do You Fix It?
How to Fix "WordPress Needs Access to Your Web Server"