You can update your payment card information from the Chargespot Portal and from the mobile app. After logging in with your credentials, go to Account information. If you don't have a payment card on record, click on "Add payment card". If you already have a payment card on record, you must first delete the existing one to add a new one. Click "Remove payment card" and confirm. Once the card has been removed from your account the button will change to "Add payment card". For the mobile app, go to Profile menu, then select "Payment method" and "Change or remove payment card".