Is this for On-premise JIRA or cloud version? You just need to replace the myjira in the populated url by default with the integration to the actual IP and port and that should work generally. Please share the instance details if any, so that we can help you better on this.
The following URL https://jira.anthem.com/rest/api has been working out.Although a right project name has been entered @ "setup integration details" form,it displays the message PROJECT DOES NOT EXIST.
In addition,the version tab has been disabled and we are not able to enter any details.
As the list of projects are not being fetched from JIRA, you are getting that error mentioned in screen shot.
Could you try 'Update the GetJiraProjects activity (you can checkout or saveas this into your app ruleset) and remove the when condition for Step 5.1. With this change projects dropdown should show list of projects from JIRA and user should be able to enter a valid project name.'