Their mail server might be acting up or you might of had it auto spam. Should be coming from order at empyriongame dot com Subject was: Thank you for pre-ordering Empyrion
I can't check for you but you could check your email spam folder or search for the email I posted above see if something came up. Even searching $14.99 should come up with something.
Hi Dmitrij, We have sent you an email with your payment receipt. It seems that the Paypal confirmation email did not go through but everything is fine. You successfully pre-ordered Empyrion and you will receive the Alpha keys when the game is released on Steam. We are sorry for the inconveniences. Eleon Game Studios
Great to see the developer reply to this, this gives people great confidence that the game is going ahead full stEam [lol terrible pun] and will be released and problems get sorted even at a personal level.