Add User Groups to New Order Email for Admin

Hello, I’m looking to list the ‘User Groups’ the customers are assigned to, into the WooCommerce New Order emails sent to Admins.

I have already added custom data (into the functions.php file), to display username & ID into these emails, using this code:

/**

• @snippet Add customer username and ID to WooCommerce emails
  */
  add_filter( ‘woocommerce_email_customer_details_fields’, ‘add_user_id_to_woocommerce_emails’, 10, 3);

function add_user_id_to_woocommerce_emails( $fields, $sent_to_admin, $order ) {
$user_id = $order->get_customer_id();
$user_info = get_userdata( $user_id );

$fields[‘user_id’] = array(
‘label’ => __( ‘User ID’, ‘woocommerce’ ),
‘value’ => $user_id
);

$fields[‘username’] = array(
‘label’ => __( ‘Username’, ‘woocommerce’ ),
‘value’ => $user_info->user_login
);

return $fields;
}

—

I found these links, but I can’t seem to get it working?

https://docs.itthinx.com/document/groups/shortcodes/groups_user_groups/
https://docs.itthinx.com/document/groups/api/examples/