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So that’s showing that the condition is wrong.

Try adding this using one of these methods: https://docs.wpshowposts.com/article/adding-php/

add_filter( 'wp_show_posts_shortcode_args', function( $args, $settings ) {
    $scores = get_crp_posts_id();

    $rel_posts = array_column( (array) $scores, 'ID' );

    if ( '340019' == $settings['list_id'] ) {
        $args['post__in'] = $rel_posts;
    }

    // This should output your IDS for the post__in value.
    var_dump($args);

    return $args;
}, 10, 2 );

Then this in your Element:

wpsp_display( 340019, $args );