Passster scroll down with conditional function

functions.php

<?php
/* add additional content to passster */

add_filter( 'passster_content', 'passster_scroller_element', 10, 1 );

function passster_scroller_element( $content ) {
	$content .= '<span id="passster-scroll"></span>';
	return $content;
}
/* add a auto scroller when content successfully unlocked */

add_action( 'wp_footer', 'passster_scroll' );

function passster_scroll() {
  	if ( true === passster\PS_Conditional::is_password_valid( 'password' ) ): ?>
		<script>
		jQuery(document).ready(function( $ ) {
			$('html, body').animate({
				scrollTop: $('#passster-scroll').offset().top
			}, 'slow');
		});
		</script>
	<?php endif; ?>
	<?php
}