I've tried 3 different Credit / Debit cards with correct details but I get a "Payment failed" error every time.
I am from India, if that helps.
Could you please confirm the organization/account ID for me to check further?
Sure: rajeshgsoni (378676)
Thank you for providing the detail.
I have created a ticket on your behalf and further updates will be provided via the email through ticket.
Ticket URL: https://support.zyte.com/helpdesk/tickets/50862