If you'd like to stop your Chillverse Pro subscription from renewing, please reach out to Support with your account details and we'll take care of it for you. There isn't currently a self-service cancellation option inside the app, so this needs to go through a support ticket rather than a settings toggle.
Your existing Pro benefits will continue for the remainder of your already-paid billing period even after a cancellation is processed — you won't lose access immediately, only at the end of the period you've already paid for.