We have an issue with the 3rd party notification system in Rally that gives notifications like the one you see here:
That will cause the notification that allows users who are still accessing the old version of the User Stories page from the new UI to be unable to access it from that location until Friday afternoon 6/26. As a temporary work around users can use the direct URL to access it
https://rally1.rallydev.com/#///tps-userstories. We apologize for any inconvenience this setback may cause.