Manage Custom fields for Jira is available for Atlassian's Jira and is sold in the Atlassian Marketplace. Licensing for Manage Custom fields for Jira is handled by Atlassian and can be managed in Jira and in your Atlassian account.
Throughout Manage Custom fields for Jira we check if your license is still active. When Atlassian tells us there is an issue with your license, we display a message to indicate this.
To verify your license in Jira:
Log in as an Administrator.
Navigate to Settings, Add-ons, Manage add-ons.
Look for Manage Custom fields for Jira and expand the entry.
If you need any help with your license, please open a support request in our Service Desk.