Rated 5 out of 5 stars
NO, it still doesn’t work after applying this tweak:
• Type about:config into Firefox's address bar and click the "I'll be careful, I promise!" button.
• Right-click anywhere. Choose New>Boolean. Make the name of your new config value extensions.checkCompatibility and set it to false.
• Make another new boolean pair called extensions.checkUpdateSecurity and set the value to false.
• Restart Firefox.
Once you’ve restarted FireFox again, the add-on remains unavailable/fails to work.