You cannot keep using extra profiles if your main subscription is cancelled. If you cancel your main subscription all your profiles will be cancelled as well.
That being said, you can cancel your extra profiles but still keep using your main subscription. If you do not want to continue your subscription but one of your extra profiles does, please contact our customer support, and we will see if we can help you. You can reach us at help@bookbeat.com.
Please note that you need to contact us from the registered e-mail address for us to be able to help with your family account.