In order to reset an admin's/participant's password - navigate to the 'Sign In' or log in page of the site. Below the 'Register' button you will see a link that says 'Forgot password?'. Click on this link and follow the instructions to reset your password.
1. Click on 'Forgot password' in the 'Sign-In' page:
2. The Reset your Password screen is displayed. Enter your registered email address, and click Continue.
3. You will receive a computer generated email to your registered email account with instructions on how to reset your password, an example is shown below. Make sure to heck your spam/junk folder as well to ensure you received the email.
NOTE : The reset password link is valid for about 5 hours.
4. Clicking the Reset password button, will display the Change your password page.
Use the instructions given on the page to set your new password.
NOTE - If the email to reset your password is not in the junk/spam folder then try clicking again on the forgot password button only after 15 minutes. This time gap is to prevent spammers.