Stopped working for me either. I'm facing the same issue as some commenters below. When I click the icon it pops out a blank frame with a constantly spinning circle in it.

The free version keeps disconnecting after some time. I have to manually disable and re-enable the extension for it to work again.

Firefox 152.0.6 (aarch64)

Auto-connect doesn't really work after a cold boot or sleep. I'll get the notification that it connected, but the icon will appear as if there is no connection, and internet access is completely blocked. A few times of turning it off and on, closing and reopening Firefox, it will start to work again. I think it's related to auto-connect, maybe there needs to be a delay, but I don't really feel like troubleshooting. I really wanted to like it but the desktop app is just more reliable.

Linux Mint 22.3 - Firefox 152.0.5

Doesn't work at all. When I click the icon it pops out a blank frame with a constantly spinning circle in it.

Works very well for me, no issues in installing it on zen browser on my mac. 10/10 There is a reason I have my email with you guys as well ^^

Very good VPN, automatically connects you to fastest server and it's free. For daily use, this is good.

Great plug-in, excellent service. I use Proton VPN all the time in different browsers on different computers. Helps clean up some of the ads too.

Will not work in Firefox 115
After the worst nightmare of Proton VPN disabling their desktop app for Windows 7 (that is precisely what needs it the most) I have attempted the work around of installing the addon to Firefox 115 and Eclipse r3dfox 151. I have pinned the addon icon to the toolbar but when I click on it I only get this swirling. Please advise or fix.

Doesnt work in firefox, tried removing extension then downloading again but now i cant even log in.
When i click Sign In, i get this new tab with Error Code: PR_CONNECT_RESET_ERROR

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