An excellent site and extension everyone should have. Genuinely unsettling how often it reads a low grade for a website you use every day, but then it also gives you a summary of why the site's ToS is so bad, and that gets downright scary.
At first I was confused that the extension wasn't appearing in my toolbar, but I asked on the Discord server and a developer was very quick to help me. If you have the same problem: it's not with your addons, it's in the address bar, next to the bookmark/favorite icon.
Highly recommend this extension!