I am uncertain if the information that I was provided by a reliable source is correct but I have spoken to dozens of people that have confirmed that they can not access the CRA website.

The CRA has confirmed that Represent A Client is Down and that they are currently working on a solution.

Several people have questioned the validity of this post.  I suspect that none of them are income tax preparers and don't appreciate the importance of Represent a Client to income tax preparers.  This petition was always intended to be a forum for income tax preparers.  The portal though which tax preparers enter the CRA's website is down and this post is correct.