Incredibly flaky VPN connection. I can be happiliy browsing then things .... just ... stop. Then I look at the extension icon and it's a warning yellow. It's disconnected with no notification. So I click to reconnect and a notification shows "Connected", BUT the actual window still shows connecting, and more often than not that connection actually fails.

It's got nice features with split tunneling and so on, but way too frustrating to use regularly.