As a long time user I could access all the locations for free, but now only five locations are available, and the one I needed most is premium only. Uninstalled.
P.S. You should really update the addon's description, since it's not 100% free as you say.

All locations used to be free (which is why I installed it), but now there's only 5 free locations. Will be looking for a different VPN.

always be in initialization

It's useless, incredibly slow.

Free version cant use many countries. I let the app use my resources hoping it will allow me to use other regions, but no luck. Stay away from it.

Before few month ago I wanted to rate this add-on. Then I wanted to give 5 star. Now sorry, but only 1 what I can to give :( I download to hungarian free vpn, but I cannot choose Hungary on the list without pay :( only 5 options have, but that dont help me. Before I told to my friend this is a good product, if they want to watch videos, but now cannot.

WTF is wrong with this thing? why it's forcing me to disable IDM(internet download manager)... it's really stupid...
and also it can't be called 100% free when only very few options are free to use.

endless initializing

bad

now only seven countries are fucking free

Whatever server I choose, websites can't load

Теперь оно не работает... И еще требует нового фокса. Отвратительно!

中国，用不了，很遗憾。一直停留在initialization it's almost done。