I have developed an app that has a feature to add subscribed calendar to a user's Calendar App. I have successfully added the calendar contents to a user's Calendar App. However, after a couple days the calendar disappears. I am not calling any of the delete calendar functions the EventKit supplies.
Is there anything I am missing when creating the calendar such as the a persisted duration? Is there any other way the Subscribed calendar would disappear on a user's account?