To delete your account, go to your profile: click on your name in the top right corner, then choose Personal Info from the drop-down list. Then click Delete account on the right.
In the popup window, click the red button Block account.
Only an account without transactions can be deleted instantly. If you made any transactions, your account can only be blocked for 5 years due to legal limitations, and then we will delete the data. During these 5 years, you can unblock the account if you wish.