yet to test it, wait for the 2nd part of the review.

Works nice if you have a paid subscription. Though, would be wonderful to implement reverse version of the split-tunneling, when only sites specified are routed through the VPN.

E.g. if I'm ok with revealing my ip to most of the sites I visit, or I already route all the home network traffic through a local Proton server, but I want to completely hide my location from selected few sites. For them I'd like Firefox to automatically route the connection through a secure-core network. Currently it is only available when you manually connect and disconnect the extension as needed, and I often forget to do so.

Otherwise, a very useful extension

Great extension.
BUT, at every FF start, I cannot access any pages without switching the extension off and on again. Then it works perfectly.
Having profiles and Netshield would be a great addition. :).

add kill switch function!!!

Loses connection after a few minutes

Unfortunately quite frequent reconnections, visible on the popup, which I quickly turned off.
The super-fast connection at browser start or after standby or hibernation should be emphasized positively in any case. Clearly better than the Windows app by a large margin.
If you need Killswitch, you have to use the app for the operating system, the browser extension does not have that.
Split tunneling also works very well: Now I don't always have to switch browsers for my online banking page, for example.

Where this add-on got two stars at its introduction 2 years ago due to being unreliable at the time, it has come a long way since. Well up to four stars now. Clean, simple and effective. It'll get the last star when the, imho, too obvious missing feature has been added: a quick connect option to the 2-3 last used or favourite countries/servers.

Would be nice to see what protocol is being used.