Can I access the Pivotal Tracker?

Is the Gradle Pivotal Tracker site intended to be publicly accessible? I get “You are not allowed to view the requested page.” after signing up (e.g for this link: http://www.pivotaltracker.com/story/show/16643687 ).

It’s not supposed to be public. The pivotal jira integration used to add these links automatically, even though we asked it not to. This has been fixed by pivotal now.