To install STAGIL Jira Issues for Confluence, follow these steps:
Log in as a user with the Confluence Administrators global permission.
Click the admin drop-down menu and choose Add-Ons.
Click Find new add-ons from the left-hand side of the page and enter STAGIL Jira Issues for Confluence into the search field.
Click Try free to begin a new trial that expires after 30 days, or Buy now to purchase a license for STAGIL Jira Issues. You're prompted to log into my.atlassian.com. The app will begin to download.
Enter your information and click Generate license when redirected to my.atlassian.com.
Click Apply license.
You can copy and paste the license into your Confluence instance if you're using an older version of Atlassian's Universal Plugin Manager (UPM).The STAGIL Jira Issues for Confluence app is now installed and ready to use