Duplicate admin emails for new orders

We’re seeing duplicate admin “New order” emails on instant payments (Paytrail/Klarna).
Trace shows two separate plugin triggers after payment:

• PLLWC_Emails->send_new_order_email → calls WC_Email_New_Order->trigger (Polylang)
• Brightplugins_COS\Checkout->admin_new_order_email → calls WC_Email_New_Order->trigger on woocommerce_payment_complete (Custom Order Status Manager)
  WooCommerce also sends on pending → processing, so these extra triggers duplicate the notification.

Could you either:

1. avoid manual triggering when Woo core will send, or
2. gate your trigger with an idempotency check (e.g., _admin_new_order_sent meta), or
3. provide a setting/filter to disable your extra send in instant-payment flows?

Example guard (pseudo):
add_action('woocommerce_payment_complete', function($order_id){
$order = wc_get_order($order_id);
if (!$order || $order->get_meta('_admin_new_order_sent')) return;
$email = WC()->mailer()->emails['WC_Email_New_Order'] ?? null;
if (!$email || !$email->is_enabled()) return;
// Optionally: only trigger if core won't (e.g., no status transition occurred)
$email->trigger($order_id);
$order->update_meta_data('_admin_new_order_sent', time());
$order->save();
});

Thank you for the plugin!