Support Forum

Give this a shot:

add_filter( 'wpsp_date_output', function( $output ) {
    $time_string = '<time class="wp-show-posts-entry-date published" datetime="%1$s" itemprop="datePublished">%2$s, %5$s</time>';

    if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) {
        $time_string .= '<time class="wp-show-posts-updated" datetime="%3$s" itemprop="dateModified">%4$s, %5$s</time>';
    }

    $time_string = sprintf( $time_string,
        esc_attr( get_the_date( 'c' ) ),
        esc_html( get_the_date() ),
        esc_attr( get_the_modified_date( 'c' ) ),
        esc_html( get_the_modified_date() ),
        get_the_date( 'g:i a' )
    );

    return sprintf(
        '<span class="wp-show-posts-posted-on wp-show-posts-meta">
	    <a href="%1$s" title="%2$s" rel="bookmark">%3$s</a>
        </span>',
        esc_url( get_permalink() ),
        esc_attr( get_the_time() ),
        $time_string
    );
} );

Let me know 🙂