Works perfectly. It's pretty easy to add custom UA. So easy to use, simple UI and pretty powerful. All stars I'll give to you for your hard work. The new random user agent feature just make this addon even more powerful. And dev is pretty helpful, if you ever encounter any issues or maybe just want to send feedbacks, just post it on the gitlab (http://bit.ly/2wpyVdR) and he will help you as soon as he can. Keep up the great work, dude!