Only admins are able to delete a user's account.
To delete an account from your portal, Click on the User's Profile> Edit Profile> Delete User Permanently> Save.
If there are many users that you would like to delete, follow these steps to access to all your users at once: Admin Panel> Detailed Reports> Users> Click on Creation to find the users based on their creation date. Then to delete each users, Click on the User> Edit Profile> Delete User Permanently> Save.
