The admin section where you specify the integration with an existing Jira instance asks for the Host. In fact, what it wants is the URL of the host. Either changing the text or adding an example of what is wanted would be helpful, because the error if you just specify a machine name is only helpful in retrospect:

Cannot retrieve test issue from JIRA Server: java.net.MalformedURLException: no protocol: jira.us.packetmotion.com/rpc/soap/jirasoapservice-v2