As of July 1, 2013, the Gliffy JIRA Plugin is now an Atlassian Marketplace paid add-on. This means you'll be able to manage all your product licenses from your MyAtlassian account. For Current Gliffy customers, your license has already been migrated over to MyAtlassian.
If you're not currently using Gliffy 5.4 or above, click here for instructions on how to use your Atlassian issued Gliffy license after purchasing, renewing or upgrading your account.
Email firstname.lastname@example.org or call us at (877) 245-4339