Stay Geng-Geng
Step 1 - Place Pretend/ Dummy order until you reach Payment screen or tab
Step 2 - Select "Debit/Credit Card" and Hit "Pay/Complete"
Step 3 - Wait for the pop-up for "Remembered Card"
Step 4 - Highlight the last four digits that corresponds the desired details to delete
Step 5 - Click the "Subtraction" Icon
Step 6 - Confirm to Delete, click "YES"