Yes, you can choose to pay your existing order using card payment even if you made your 1st payment using convenience store.
- Go to "Finance" and select the payment you want to make
- Check the payment details and tap "Pay now"
- "Change" your payment method to your registered card, or select "Add a Payment Method" to input new card information
- Tap "Pay" to complete your payment
Be reminded: The card payment in this scenario would only apply to this payment. Rest of orders placed with convenience store payment will NOT be auto-deducted still.