Isadora will automatically deactivate and revert to Demonstration Mode when your subscription period ends.
If you later purchase a new Isadora Subscription, Rental, or Perpetual license, you can simply use your new license activation information and follow the steps in our article on how to activate an Isadora license.
Previously created Isadora files are not affected in any way. They will still be open and run while Isadora is in Demonstration Mode, but you will not be able to save any changes to new or existing projects.