To delete your account please go to your main page. In the upper, right corner select "Settings" and then "My profile". After that in the upper right corner you will find red button with "Delete account" on it - you will have to click on it. In case of having FutureAdPro account you will have to follow the same steps there, too. Please remember that you will have to confirm deleting the account by clicking on the link received by e-mail.