This article helps with: Can you delete my bank details? Are my bank details stored?
We don't store any payment details as all card transactions are conducted through our providers Checkout.com or Stripe.
If you’d like to remove your card details from Checkout.com, please contact Checkout support here: https://www.checkout.com/for-consumers/faq
If your card was saved through Stripe and you want to delete it, you can follow this guide: https://support.stripe.com/how-to-delete-your-saved-payment-information
*For reference: These providers are certified as a Level 1 Service Providers, which is the highest level of certification for payment processors. They comply with the Payment Card Industry Data Security Standard (PCI-DSS), a set of security standards established by major card brands like Visa, Mastercard, and American Express.