The Scheduler TTPSC provides 30 days free evaluation period for all apps. Normally Atlassian does not extend Cloud licenses. However in special situations, like migration, you can prolong the trial.
...
Atlassian may require Vendor’s approval for a trial extension. If you contact our support with a request for consent, please provide the following information in the ticket:
App name
time Time period for which you want to extend the trial
...