it is wretched

Deceptive, full of backdoors to spy on you. Should be removed from Firefox immediately

Не знаю, как там в других странах, но из России я ни к одному серверу так подключиться и не смог.

Ограничение по работе, временное. В бесплатной версии требует переход к платной. Ограниченный выбор стран. Дешевка.

Какие то входы, пароли требует. МУСОР!

THIS IS IMPORTANT!
According to their ToS:

"By using the Services, users consent to the collection and use of their Personal Information by us. You also represent to us that you have any and all authorizations necessary to use these Services including using them to process Personal Information. We collect and use the information you provide to us, including information obtained from your use of the Services. Also, we may use the information that we collect for our internal purposes to develop, tune, enhance, and improve our Services, and for advertising and marketing consistent with this Privacy Policy."

it never worked

The premium server is worse than the free server
And the PC version has so many bugs it's impossible to make it work.
Buy this product, and you will waste at least 5 hours just trying to make it work.

требудет зарегистрироваться и платить

Доступные серверы только для преимума. И это неточно. Требуют регистрации, пробуют получить адрес ящика, зачем-то серверы посортированы по странам, но по факту по фиг, какую страну выбрать: соединения НЕТ.

it Continuously Eats the Internet at the Maximum Speed (whatever your Local ISP Provided Speed is). So Watching videos while being Connected Through this VPN, Is almost Impossible. Dont't Know if It Steals our data from PC or it Downloads to The PC. But everytime when we connect through it, Internet Stealing start to happen & goes beyond 100's of MBs, of data Till you do not Disconnect from it.(it may even Eat GB's of Data if you do not disconnect if Already connected to Vpn Through It). I uninstalled it and Now my Firefox Browser is working Fine while connected to Another Vpn addon. This Add on has some Serious Security Issues & must be analysed by Firefox Team.

Claims to be open source. But where is the link to the sources?

Takes a minute to connect. Then after it supposedly "connected" an IP check shows that it didn't change my IP at all. Waste of time.

Обязательно регаться, ну и нафига мне такая анонимность?