leaky-paywall-extra-profile-data.php

<?php

add_filter( 'leaky_paywall_profile_your_profile_end', 'zeen_lp_show_extra_profile_data' );

function zeen_lp_show_extra_profile_data( $content ) {
    $comment_number = 25;
    return $content . '<p>Here is some additional data.  You have written ' . $comment_number . ' comments.</p>';
}