You can click on the "Forgot password" link on the login page, input your registered email id and click on "Send password reset link". You will receive an email with a link to reset your password.
Make sure you are using your registered email ID to log in. If you use some random email id which is not registered with us, you will not get the link for password reset.
If you do not receive the password reset link even after using the registered email id, please email us on firstname.lastname@example.org and our team will help you get it resolved.