The subscription does not auto-renew so there is nothing you need to do to end it.
If you would like to renew your subscription, you can do so by purchasing it again in our store : https://www.pinkcatgames.com/store
You can renew at any time and the new subscription will automatically start when the current one expires.
If you choose not to renew, you will not lose any of your questions, saved games, student names or student progress data. You will just no longer have access to the games and features that come with the subscription.