Using a Mac, don't use these guys. In China, ditto. In fact, unless they sent a balding fat man nicknamed Wizard to your home riding a scooter to ensure there is service, don't give em a dime, and better yet, if you do, and its not working, walk away with peace of mind.
If it weren't for their occasional response to my emails about how bad their service was, you would be forgiven for thinking BlackVPN was a con!
I joined for the service because of the 3 months for 1 deal, which has turned out to be basically money blown and hours wasted of my life that I won't be getting back. I downloaded Tunnelblick--which should be called, Tunnelblows. After finally getting the software to work the way it should (obviously not built by mac minded people) i couldn't log in to the BlackVPN server. Their response, seriously was, "no way, it has to work, i just don't know." That's TECH SUPPORT!!!! I'm not even angry, but they emailed all to leave a review, so i was motivated to be honest.