Addon faulty on multiple occasions. - It will turn itself on and off every 1 second until disabled through firefox settings.

While it is acting in this way, it is impossible to load a page or use the on/off button due to the connection state changing faster than a human can press the off button.

Windscribe as a vpn is fine but the firefox addon is not recommended.

So many bugs... It almost never works correctly and if, it just stops after like a day or so.

dosent connect in iran

I have not been using Windscribe 24/7; only at select times. But apparently at some point its configuration set itself to run when the browser starts, and ran itself out of data. Curiously, it also thought that this was October (it's actually the middle of December).
Lastly, the nagging to upgrade is ubiquitous and annoying enough to cause me to seriously contemplate uninstalling the app permanently. It promises anonymity and warns about invasive ads - then floods you with its own.

When I'm trying to download smth from cloud.mail.ru mostly the download fails.

It works and there are no real issues with it. The data cap on free users is very low at 2gb, i went through that in about an hour or two. They do not let you signup your email if its considered (by them) to be a disposable email, i used a mail.com email and it was rejected. this pretty much annoyed me because it is by no means a "disposable email". While it functioned it is pretty much useless as a free application.

This extension is fine. It does a bunch of stuff. I love Windscribe and think it's a great option for a light-use VPN.

That being said, it is just better to get the desktop version of the app instead. The only way I would justify choosing the extension over the desktop app would be if you were using a portable version of Firefox. Otherwise, get their desktop application.

Secondly, I was having an issue where Firefox was starting up and then not loading my home page (www.google.com). At first I blamed it on uBlock, but then I did some debugging and found that this extension blocks the first page from loading when Firefox starts. My guess is it has something to do with either the extension refusing to initially load the page, or if Firefox doesn't want to load a page on startup until all extensions are loaded. Either way, I'd rather remove the extension than use a different browser. :(

Edit: After reading further reviews, it has been made clear by Windscribe that they have only put priority on the Chrome extension and have not been updating this problem despite its being reported on their subreddit.

Edit 7/7/19: While I'm not acquainted with the add-ons rollout system, I feel that three months does not qualify as soon. I really do want the extension to be updated; it hasn't yet!

Edit 8/26/19: Now that I'm reading the developer response again, going into excess of 4 months does not qualify as 'very soon' in my opinion.

Cut the bloatware. Why bundle a worse, closed-source, less customizable version of u-block origin when it can be installed separately?

Works fine on Chrome but terrible on Firefox. Painfully slow in comparison to Chrome version and breaks internet connection.

Too slow for a VPN - often even unable to open web page, moreover to watch streeming videos. Very small limit of data. Browsec is more faster and have no traffic limit.

Poor performance and doesn't work with a number of web sites.

Firefox Version 61.0.1 for ubuntu 18.04
Cannot login, as widget closes when moving from login to password field.
The same issus as with NordVpn