Дополнение обновлено. Теперь всё работает!

Does not work on FF Developer Edition 71.0b9

Sadly this extension does not work in Firefox Developer mode. The bad thing about this is that it fails silently. It shows a green icon but the VPN is not connected. Even tough you think you're safe, you're not. I already contacted the support but they only told me to use the desktop app. I always loved the extension because it was very convenient always being in a VPN while browsing w/o having to configure anything.

It's an OK, add-on. It has some basic flaws that prevent me from wanting to use it. Whenever you setup a bypass rules in the settings for a certain site, you need to restart the browser before it takes affect. Also, it seems to get different servers than the desktop version of the app. Sometimes with different speeds. Also the app forces you to choose custom "content blocking" within Firefox's settings; rather than allowing you to choose something else.
If the devs can make it quicker to adjust to bypass rules in the settings, I would definitely be willing to change the review.

不适合

The re-directoin and encoding of web site data works fine , unfortunately it has some annoying side effects , I was unable to log in to my local router and storage devices with this addon installed (even when it was toggled off) and the default size of firefox kept resetting to 50% of the available screen when I started it.

The Windows client is excellent. The add-on causes site settings to be lost between tabs and between sessions.

The service itself if good, but the Firefox extension has never worked properly (though Chrome & variants work fine). All setting are lost upon closing the browser, forcing the user to reconfigure/login with every browser session.

It works fine but the bypass rules are not working well. The only reason I opted to try this addon is because it offers per domain bypass that the VPN apps don't allow. Problem is Amazon still think I'm behind a vpn even when on the bypass list and I can't watch Prime video. I've tried everything but still can't watch Prime video without turning off the VPN manually, which defeats the purpose of this add-on frankly.

Difficult to understand and use..Not user friendly

Doens't work and the customer service wont give an ETA for a fix.

Update July 13, 2020:
It's working again like before ☺👍

Update December 11, 2019:
Since the latest Firefox update, this addon doesn't work any longer for me. I don't like to give it 1 star rating but I tried troubleshooting myself. I gave it access to private browsing, reinstalled and also tried on a new Firefox profile. It simply won't work.

I like that it has a kill switch and offers many regions, including some handy privacy protection features. Along with Firefox's container tabs, it's a solid tool against trackers. It's not free from bugs but I notice that simply uninstalling the extension, restarting Firefox and reinstalling it fixed all my problems I've had with it so far. My last problem was missing regions but a reinstallation fixed it.

I have been using PIA, pretty much since inception, which I learned about from the great Anons on 4 chan. Banking, shopping etc. are no longer a paranoia inducing experience. No sweat, no stress, just easy to setup and utilize. The web is not a scary place thanks to Private Internet Access!

generally okay xcept bbc and nflix are onto it ...

The privacy access for this add-on is atrocious. Check under Permissions, and you will see:

-- Access your data for all websites
-- Download files and read and modify the browser’s download history
-- Access browser tabs

How is this OK? I understand their need to protect against phishing, etc, but access to ALL data, that's borderline unethical and vast potential for data leakage, and corporate maleficence.

Some additional quirks, as noted by others. Sites such as nextdoor.com will not allow login, even when PIA is not connected. The extension needs to be disabled.

One cannot connect if zscaler is running on the OS.

My router firewall was somehow blocking the extension from finding and connecting even though Firefox itself was working fine with router firewall active. I disabled router firewall and PIA extension connected fine. I then closed Firefox and activated router firewall. After that the Firefox and PIA worked perfectly except PIA won't allow changing location unless I repeat the process of disabling-enabling router firewall. If I use the PIA Windows application this issue is not present.
Edit: The issue also occurs with Google's Chrome browser.