Software subscriptions are not cancellable during your commitment period and are non-refundable. This means that once you commit to a subscription for a certain period of time, you are obligated to pay all payments owing for that period. Even if you stop making payments and your license is shut down, you are still obligated to pay the outstanding payment(s) for your subscription period. Please see the Unity Terms of Service, which include additional terms for the Unity Software, for more details.