Why have I not received my one-time password (OTP)? iSTOX March 25, 2020 08:55 Updated You can request a new OTP by clicking on the 'Resend Code' button below the OTP entry field. Still encountering issues? Contact us at firstname.lastname@example.org for assistance. Related articles Do I qualify as an iSTOX investor? I am trying to log in to my account but am getting an error message that my one-time password (OTP) cannot be verified. What should I do?