Subscribing problem

[tareq tareq]

Hi,
I've subscribed successfully in use-revolution mailing
list. But i can't login it. I entered my e-mail
address into admin address field and gave my password,
then I click visit subscriber list button and it shows


Error
use-revolution roster authentication failed.

I've sent a mail to -
use-revolution-owner at lists.runrev.com

But no reply found.

How can I visit "ques n ans" of mailing lists and can
post my problems in it?