When something goes wrong with the add-on please provide us as much information as possible so that we can reproduce the problem. Sometimes an error may be caused by a specific information entered on the UI, it may happen on a specific Jira version only. Please describe the steps which causes the error. Following information will be helpful for us.
Steps to reproduce error
A screenshot of problem if it is UI related
Jira version, DB version and Browser type and version
Jira logs, especially error messages related to the add-on in the logs
Browser's error logs
You can find more information about how to collect some of this information in the pages below.