Wordpress WooCommerce programmatically set EU VAT when creating an order in PHP

I am really struggling and I really hope that you can help me with this questions.

So the question I am struggling with is:

How can I add the EU VAT with a checkmark in the order? Currently I only get a big red cross in the EU VAT column in the wordpress dashboard. What am I missing?

Screenshot of the order with a big red cross (Check the fifth column)

https://imgur.com/a/Oox4k5k

The code

I made an endpoint in PHP and call it in the frontend. I left some variables out to make it easier to read. You can still see which methods I am calling.

$order = wc_create_order();
$order-add_product($product, $quantity);
$order-set_address($billingAddress,'billing');
$order-set_address($shippingAddress,'shipping');

$country_code = $order-get_shipping_country();
    // Set the array for tax calculations
    $calculate_tax_for = array(
        'country' = $country_code,
        'state' = '', // Can be set (optional)
        'postcode' = '', // Can be set (optional)
        'city' = '', // Can be set (optional)
    );

// Get a new instance of the WC_Order_Item_Shipping Object
    $item = new WC_Order_Item_Shipping();

    $item-set_method_title($shipping_label);
    $item-set_method_id($shipping_id); // set an existing Shipping method rate ID
    $item-set_total($new_ship_price); // (optional)
    $item-calculate_taxes($calculate_tax_for);

    $order-add_item($item);

    // $order-update_status('on-hold');
    $order-calculate_totals();
    $order-save();

Thank you for your help!