Praveen, Please check the Inbox of the registered email and mobile number. Please check if you do have the KCET user id. If you do not have them there, please reach out to the helpdesk: keauthority-ka@nic.in . Please reach out to them at keauthority-ka@nic.in  from your Registered Email id and mention "Lost Credentials" in your subject. They usually take 24-72 hours for them to respond. They usually take 2-3 days to respond.