To update your payment details, please follow the below steps:
Please login to your account.
Once you log in, go to Profile section and then, click on "Membership & Payments ->"Manage Payment".
Then, click on "Payment Methods"-> Edit Payment Method.
Enter your new card details and click on "Update".
If you still face any issue with updating the payment details, you can always send an email to "support@shawacademy" for further assistance.