Unregistered registered user  Go to the Limited Access challenge

When I am trying to solve the challenge I got the following answer as a result:

Your answer is correct. To keep track of your progress you need to register.

And the task remains marked unsolved (red).

But I am registered.
What am I doing wrong?

probably not logged in.

Thank for a tip.
So how come am I able to write a post on the forum under my login?

But actually it might something about. I am logged in in my browser, but I get the access to the limited file using a command line tool. I am passing the cookie which I copied from my browser session, but maybe it is not enough. Is it?

if you send the cookie from a different computer make sure you're not login using restrict to your ip
other wise it should work or you're not sending the cookie correctly.

Timing was wrong. Thanks