The supported versions on the connector page mention JIRA versions 5.2 and 6.0.
https://help.rallydev.com/atlassian-jira
The latest version of Jira is now 7.0.4, will the connector still work?
"...we are focused on HPQC this quarter, and right now JIRA 7 is next in line after that, so I don't have an exact time to give at this moment, but it's on our radar. "