Very basic, and servers are not always up and running. 'Smart location' makes no sense since it uses random and very far away servers(higher latency). No updates on the extension from developers since Mar, 14 2019!!
The same is true for the standalone Windows app, not only the extensions have hiccups.
The good part: when it runs okay, streaming plays smoothly and no major buffering issues. Geolocation spoofing works reasonably, it needs improving.

Не работает, хоть и есть подписка - просто не подключается к серверам (при уже активном VPN подключении через роутер)

False advertising. This isn't free.

I got this VPN on BlackFriday2020. Lifetime VPN service for 20 USD. Is it as fast as they say? Hell no. Is it as watertight as ExpressVpn? Probably not. But it was 20 bucks and it does well enough for what I want to use it for which is Kodi, some ocasional file sharing and some extra protection when browsing. From 300mbps I was left with around 230mbps once connected through the VPN.

无法使用 软件失效

Worked well for a while. With the Firefox 77 it fails in the private window. It can't reach or find their servers. The regular window still works. We'll see how much longer. Three tries to get help failed ending in: wait two days and try again, we'll email you, and finally: uninstall Firefox! None of the routine advice works: "allow in private window", logout/in, uninstall/reinstall.

If you have a problem with this good vpn :
- Logout your account from FastestVPN Firefox extension
- Right click on FastestVPN Firefox extension
- Click on Manage Extension
- Scroll down and Allow the option "Run in Private Windows"
- Re-login your account and then reconnect the servers and check

Enjoy

Doesn't work after logging in. Says connecting and then just "not connected". Works fine in chrome.

First, this isn't a free service. I bought a lifetime membership and have been able to get the app to work on my smartphones, but the browser extension has never worked for me. So don't bother, even if you're a paid subscriber.

The Windows app sometimes works but I was hoping to get this Firefox plugin to work so that I could set the VPN at the browser level only rather than for all incoming/outgoing connections on my computer.

It's been 13 months (March 2019) since they launched this plug in. It's never been updated or had any bug fixes.

If you have subscription then it works fine.(it is not a free vpn,they should mansion about it)

YOU CANT USE AT ALL UNLESS YOU PAY!

This add-on works fine in normal mode, but will not work in Private Browsing.
I contacted the company and they told me that they are "working on it". The last update was nearly a year ago.
This does not indicate that they are actually working on it.

I have paid for a lifetime subscription to your service. I expect better than this.

Мне сервис нужен для анонимности, НАХУЯ я должен в нем регистрироваться?

Its not free, paid subscription.. very deceptive