all RUSSIA & UKRAINE are blocked on my network -- this extension will NOT fully install

cant register

Misleading. It is a pay site. About $12 a month. Suspect China based software. Caveat emptor.

Verbindungen brechen ständig ab, Instabil!

В моем случае не рабочее расширение ,ни один адрес не работает .Платное,после 3 х дней

Not free (max. 3 days) - Read Homepage carefully, read reviews carefully! Don't trust every 5 star review, especially no word ones ;-)
Hompage advertise that you can reach even BLOCKED websites ...serious?? ...maybe blocked for your destination ones, otherwise BS :-))) - Hompage suggests this ip hider is faster than Web Proxy Service !?? (No context !) ... You see a speedometer with ~240! But you can read "...all our proxy have 100mbit speed."
If you have a 50 mbit line/provider you get 50 mbits.
If you have e.g. a 500 mbit line/provider THAN you get 100 mbits.

требует регистрации..

cant open some website... must pay to work

I even was not able to register! WTF!

Платное гамно