I chose this extension because the devs are active in replying to concerns of the users, and primarily because the extension I was using thus far is no longer working properly in FireFox v57+.
It works fine for the most part, and does what it says. No issues there. But there are 2 issues that turn me off:
1. No separation between private and regular windows. If VPN is enabled in Private, it is also automatically activated in regular window. This is an issue because a lot of sites I use flag this as a security issue and either temp-deactivate my account, or auto-logoff me, or send me a security email alert, which means I get a slew of emails in 5 minutes of enabling VPN. My previous VPN had the option to enable only in Private window. I hope the devs would consider implementing this feature here also.
2. FREE gateways are ridiculously slow. Almost unusable. Sure, FREE options are usually slower because of high traffic volumes and lesser resources allocated, but these are slower even by that standard.