I installed a extension called MAL-Sync and tried to authenticate with one of my accounts. When I went onto the websites Simkl, MyAnimeList and AniList, I was not able to access some features. For Simkl none of the 'buttons' worked, disallowing me from logging in. MyAnimeList gives a "400 Bad Request." AniList says that it requires JavaScript. I checked to see that I have java script enabled, which I do since Firefox has it enabled by default. I checked my extensions and after disabling the only one that said disabled java script it still doesn't work. What do I do?