I am a paying Surfshark customer, and I use this add-on regularly. (I do not navigate using VPN all the time, as it makes browsing noticeably slower.) The app works as expected, in two years I've experienced no issues at all.

When Debian GNU/Linux cannot install Surfshark VPN, Mozilla can!

An Awesome, ever expanding app/extension, well worth the investment.

The extension works great, however I had issues with the desktop app using the latest Ubuntu OS. I logged out one time and never was able to login again. I could use the static set up up configuration wireguard settings in the OS but the app itself never worked again.

Surfshark has been great for me, with one exception. The app is brilliant and easy to use. It gives me all the features of a good VPN product, BUT, ever since they introduced their CleanWeb and antivirus features, it has become a nightmare when you click on links on web pages.
Surfshark blocks everything - you just get a blank screen. There is a Bypass List feature, but it does not work on most sites. My only option is to use another browser/PC that does not have Surfshark installed and things work every time.

super dziala bez problemow

To be honest, compared with the nordvpn extension, this extension is just junk. Very unstable proxy performance.

Makes not knowing who I am when It is working.