CDN is not working properly throwing {“success”:false,”data”:”Site not registered in the Hub.”}

Whenever I enable smush CDN all the images dont load for example:
https://762114.smushcdn.com/765553/wp-content/uploads/2016/10/Glazed-Donuts-by-Loaded-E-Liquid-120ml-Main-e1541167599151-414×311.jpg?lossy=1&strip=1&webp=1
It returns data “Site not registered in the Hub.”