Yes. We're following Atlassian's policy regarding extensions of add-on license evaluations obtained through Atlassian's Marketplace. If you have obtained your evaluation license key through the Marketplace, please extend your evaluation license through the Marketplace. You can do this by generating a new evaluation license key on the Tempo add-on's Atlassian Marketplace page and copying that license key into the manage add-on screen in the product's Administration section.
Alternatively, if you remove your expiring Tempo evaluation license from the Universal Plugin Manager, the "Free Trial" button will be re-enabled and you can generate a new evaluation license from there.
Please contact the Atlassian ecosystem team if you have a question about extending your evaluation license through the Marketplace.
If you have obtained your temporary evaluation license key directly from us — either because you are using OnDemand or because you are using an older version of JIRA — please contact us and we will extend your license trial for you.