leaky-paywall-bypass-by-user-agent.php

<?php

add_filter( 'leaky_paywall_filter_is_restricted', 'zeen_bypass_this_user_agent', 20, 3 );

function zeen_bypass_this_user_agent( $is_restricted, $settings, $post_id ) {

    $bypass_value = 'Googlebot';

    if ( isset($_SERVER['HTTP_USER_AGENT'] ) ) {

        $user_agent =  sanitize_text_field( $_SERVER['HTTP_USER_AGENT'] );

        if ( strpos( $user_agent, $bypass_value ) !== false ) {
            return false;
        }
    }

    return $is_restricted;
}