second image on product mouse hover

Hi,
I use your plugin “WooCommerce Dynamic Gallery LITE” with a theme that presents the products and passing over the mouse, it shows the second image of gallery.
When I installed your plugin the second image of gallery is always the same of the “featured image”, so it shows the same immage, how can I fix it?
I am attaching the theme code …
I tried to change from [0] to [1] in the code, but it does not work
thank you very much

function woocommerce_template_loop_product_thumbnail() {
    global $product;

    echo '<a href="' . apply_filters( 'woocommerce_loop_thumbnail_url', get_permalink() ) . '">' . woocommerce_get_product_thumbnail();

    if ( ! yit_get_option( 'shop-use-second-image' ) ) return;

    // add another image for hover
    $attachments = $product->get_gallery_attachment_ids();
    if ( ! empty( $attachments ) && isset( $attachments[0] ) ) {
        yit_image( "id=$attachments[0]&size=shop_catalog&class=image-hover" );
    }

    echo  '</a>';
}

[Moderator Note: Please post code & markup between backticks or use the code button. Your posted code may now have been permanently damaged by the forum’s parser.]

https://ww.wp.xz.cn/plugins/woocommerce-dynamic-gallery/