What Can I Edit with PBS?

You can only edit the content of pages, posts and custom post types using Page Builder Sandwich.

You cannot however edit theme template files such as:

• Frontpage (if it's set as your latest posts in Settings > Reading)
• 404 pages
• Category list pages
• Tag list pages
• Search results pages
• and other similar pages

Think of it this way, if there's an "Edit Post" or "Edit Page" on your admin bar in your frontend, then the page should be editable.