Check your spam folders? Is your email correct? I decided to spring on a K16 board via PayPal and received receipt email within a few seconds. My status says processing also.
He paid in BTC. I haven't gotten a confirmation either. Maybe they're manually issuing them (for BTC) or there is an issue being sorted.
I didn't get one either guys, just a receipt from paypal, I wouldn't worry about this atm. They may manually process confirmations, or only send emails once the order moves beyond processing...IE when they get chips.