You mean you tried the public posting key and the private posting key?

I noticed the same thing about the button when I tried to enter a key. The button just seems to not do anything.

When I emailed support about it, they told me to double check that I was entering the right key. When I asked them which key I was supposed to enter, they said I should enter my private active key, not the private posting key.

It seems like something funny is going on.