Select Add-ons from the administration drop down list from the settings on the top right-hand side of your screen.
Select Find new apps on the left side of the add-ons screen.
Enter WBS Gantt-Chart for Jira in the search box.
Click the Try it free button.
Click the Start trial button.
Select Add-ons from the administration dropdown list from the settings on the top right-hand side of your screen.
Select Manage apps from the add-ons menu on the left.
Select WBS Gantt-Chart for Jira on the right-hand side of your screen.
Confirm that the uninstallation has been successful.
If you have any questions please feel free to ask a member of the Atlassian community!
Add the tag "addon-jp.ricksoft.plugins.wbsgantt-for-jira" when you ask a question.