Just a heads-up, the “trusted categories” category sits above the “custom blocked URL’s”… So if you want to block a nice site, like scratch, you have to move the custom blocked contact above trusted categories (in picture below drag 4.5 to 4.3 or higher). See pic attacthed. From Dom 


Needs modding s little actually - the numbers were wrong for most

Just need to move custom blocked above trusted categories