leaky-paywall-adjust-content-access-description.php

<?php

add_filter( 'leaky_paywall_content_access_description', 'zeen101_adjust_content_access_description', 10, 3 );

function zeen101_adjust_content_access_description( $content_access_description, $level, $level_id ) {
	
	switch ( $level_id ) {
		case 0:
			$output = '<ul>';
			$output .= '<li>Gold Benfit #1</li>';
			$output .= '<li>Gold Benefit #2</li>';
			$output .= '<li>Gold Benefit #3</li>';
			$output .= '</ul>';
			break;
		case 1:
			$output = '<ul>';
			$output .= '<li>Platinum Benfit #1</li>';
			$output .= '<li>Platinum Benefit #2</li>';
			$output .= '<li>Platinum Benefit #3</li>';
			$output .= '</ul>';
			break;
		
		default:
			$output = $content_access_description;
			break;
	}
	return $output;
	
}