I cann't authorize ADE with my Adobe-account

When I try to, I get the next message: Ditital Editions can not connect with the activatingsservice. I'm ask to check my internet-connetion, but I'm online, there's nothing wrong with that connection. As I logged in with the same account on this forum, it's prove that my Adobe-account is not the problem.

What can be the problem in this case?