Ensure you do not leave the card setup page to check your inbox. You can simply check the content of the SMS verification bar on your phone. Also, ensure that your card is activated for online transactions. You can activate your card for online transactions at your bank.
Non-receipt of OTP : OTP is generated and sent by your bank to the account holder before authorizing any transaction, not Carbon. Please contact your bank for an OTP.
Do not share your OTP, PIN, and debit card details with any third party including Carbon staff.