Can you please elaborate on what is not working? I updated the add-on so that it is compatible with Firefox 57+. The old version was going to be fully unsupported a few weeks from now, and did not even work for me on Firefox 56. What version of Firefox are you using? The reason I changed everything was to prevent everything from breaking within the next few weeks, so I am sorry for anything that may have broken in the transition, and I will try my best to fix it.