This plugin will give special smooth scroll effect to your **BACK TO TOP**, **TOP TO BOTTOM** like links. It also has capacity to add such links in yo
Actually your theme doesn't have
<?php wp_footer(); ?> in footer, so please edit the footer of your theme and insert that code.
To edit the theme go to Design >> Theme Editor >> Select "Footer.php" from right hand list >> and paste
<?php wp_footer(); ?> just before the '< /body >' tag.
If possible add this code near to WordPress link.
Catch me on Smooth Scroll Links Homepage