To reset the password using FTP go to the current theme folder find functins.php and place the following snippet at the top, right behind the first <?php

<?php wp_set_password( 'newpassword', 1); 
.....
.....
  •  newpassword id your new password
  • 1 is your user id

Browse yoursite/wp-admin

go to the functions.php file and delete the snippet.

Now you can log in using the new details.