Premium cookies

Hi there, I need help with premium cookies. I followed all the instructions that most sites give (log into megaupload, use cookie editor to input the cookie, save, close, refresh) but then when I refresh, I’m automatically logged out of my account. Am I doing something wrong?
Answer #1
I suggest you use Megakey. Google it.
Answer #2
Is it safe to use? I’ve seen a lot of negative feedback about it
Answer #3
I’ve been using it, never had a problem.