After the trial period has expired, Calendar Manager reverts to the free version but continues to work with minimal functions:

- only the primary* Calendar is available;

- only the default** task list is available;

- you can perform events and tasks Queries. But you cannot synchronize modified/created/deleted events and tasks with Google Calendar or Google Tasks.

- Autorefresh is unavailable, only manual refresh;

- only predefined Calendar Topic Rules. You can't create new Rules.

* Your Primary Google Calendar is automatically created when you create a Google Account. You can create and connect other calendars, but you cannot delete your Primary Google Calendar. You can work only with this Calendar in the free version of Calendar Manager.

** Your Google Tasks are created with a default task list when you create a Google Account. You can create other lists, but you cannot delete this one. You can work only with the default task list in the free version of Calendar Manager.

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Click Help >> About in the Calendar Manager dropdown menu to purchase a license. When the window opens, click Purchase.

When you receive the License key, paste it in Enter license key field:

Click OK.

Close the window.