[Plugin: Woocommerce] – no notification for admin on pending status

My website adres: parms.clivio.pl

When someone has filled the form and click on the Place Order button and is redirected to paypal (but doesn’t pay) admin doesn’t receive any information about it. The status must be manually changed from pending to processing and then admin receives an e-mail about new order (it doesn’t make any sense, admin should be informed even when someone didn’t pay).

I had been looking for the solution since yesterday and I haven’t found anything yet.