How to insert an element at the top (order received) page?

Hi there,

the order-received is an endpoint for the Checkout page not a separate page.
Which means you need to:

1. Set your Element Display Rule Location to Checkout.
2. Use a filter to make it only display on the order received endpoint. Add this PHP Snippet:

add_filter( 'generate_element_display', function( $display, $element_id ) {
    if ( ! function_exists( 'is_wc_endpoint_url' ) ) {
        return $display;
    }

    if ( 123 == $element_id && !is_wc_endpoint_url( 'order-received' ) ) {
        return false;
    }

    return $display;
}, 10, 2 );

123 needs to be changed to the ID of the Element. Which can be found in the browser URL field when editing the element.