To change your payment details, please follow the below steps:
Please login to your account here.
Once you log in, go to Profile section and then, click on "Membership & Payment ->"Manage Payment".
Then, click on "Payment Methods"-> Edit Payment Method.
Enter your new payment details and click on "Update".
Note: Paypal is not available in some countries, if you don't see the option under Payment Methods, then, it is not possible to switch to PayPal from Card.
Please reach us by clicking HERE if you need assistance or are experiencing issues.