So far, so good. I will update my review if I run into major issues. I think people experiencing issues in private browser windows do not have the option for it enabled on the extension. I am running the extension, and the desktop app at the same time. I have also tried it with the desktop PIA app turned off, and have found no difference.

Web Developer Google Marketing Global Partner

Very good vpn extension for Firefox. Occasionally I have long ping times, but overall I recommend PIA

On latest update, as soon as I open any private window it logs me off completely, I have to relogin to my paid pia user account to continue using it. Without private tabs it seems reliable enough, but any one single private tab - and it logs off. I've been paid user for more then a year now, but now I consider switching, since reliable vpn is required for my work.

Satisfaction Beyond Description...

Superb app. I love it!

UPDATE: The plugin has been completely unusable for several months now. The problem is that it constantly asks for your username and password, there is no way to save them, and entering them just results in another prompt.

It's working relatively well so far, but there are a couple problems:
1. We're forced to use Firefox's builtin tracking protection (privacy.trackingprotection.pbmode.enabled). I really dislike this, because I prefer to use PrivacyBadger to dynamically block trackers. This should be user-configurable.
2. I'm prompted to relogin every time I open a Private Window. I would much prefer for it to work seamlessly, remembering my credentials the way it normally does.

My experience with this . add-on is that it is unstable and unreliable. Tech support is trying very hard to help but we're getting nowhere.