If you want to change your payment method, you will first need to cancel your current subscription.
If you subscribed via debit/credit card or PayPal, you could simply cancel it within your Profile in the app. If you subscribed through Apple or Google, please ensure your subscription is canceled within your Apple or Google account.
Once your current billing cycle expires, you must redo the quiz again and subscribe with a new payment method. We can offer you discount pricing for the subscription, so do not hesitate to contact our Support Team.