Can't use without a subscription, unlike the OS-wide client.

The application is extremely raw!

1. There is no protection against IP tracking
2. There is no automatic reconnection in case of connection loss
3. Frequent disconnections

Although I love the idea behind the app, using it has seriously downgraded my internet experience. Works fine after installation, but alfter closing my browser and restarting it, it shows connected but none of my (buffered) pages will load. Disconnecting and reconnecting more often than not results in the app saying it can't make a connection to the server. The only way I get it to work so far is disconnecting vpn, loading pages without the vpn connection, and then connecting VPN again - miraculously, suddenly, it connects to the servers. But having to load pages without vpn first seems to beat the purpose of it. This is not the robust proton applicatin quality I've come to love, I'll be switching back to the desktop app.

It's nice to have a proton vpn extension. However, after successfully conneting, all traffic in the browser is blocked by the company firewall. The extension needs measures to circumvent blocks, otherwise is useless in most relevant cases (or countries).
edit: secure core is blocked too. Using the proton desktop application, only stealth protocol is able to connect

The actual ProtonVPN service itself is definitely 5 stars, but unfortunately this add-on has a few glaring issues that make it borderline unusable:

- The connection will randomly drop and reconnect. Obviously for a VPN extension, this is a pretty critical failure and needs to be addressed ASAP.
- Compounding this, as far as I can tell, there is no "kill switch" option at all, so if the tunnel loses connection then your web traffic leaks to your ISP.
- When the extension randomly drops your connection, if you have the "Secure Core" option selected, it will not reconnect via Secure Core and instead just directly reconnect to the fastest server.

Additionally, it would be nice if you could enable some free servers for those with non-premium accounts, but I recognize that you're running a business and the extension is meant to be a value add for paying users. Having said that, however, the extension itself is critically flawed, and I would recommend users instead use the desktop version of ProtonVPN and tunnel your web browser's traffic through it instead, as it at least has a functioning kill switch option to help prevent leaks.

Great idea, quick and easy to use...but unfortunately highly unreliable. It keeps disconnecting regularly after a few minutes (<5) without clear reason and without any indication. You are now forced to 1) add the add-on icon to the toolbar and 2) keep an eye on it at all times.

Pop_OS! user.
when I boot up and then start Firefox, the Proton VPN shows it is connected but I can't load any site.
I have to restart Firefox many times to eventually get it working.

It keeps disconnecting. I have already upgraded to 0.1.7. It happens whenever there is inactivity and you resume browsing. The inactivity triggers the disconnect. If I keep actively browsing it won't disconnect. However, that's not sustainable.