Padrone.4369

hello i bought pof yesterday and i received an email that say"Thank you for ordering from the Guild Wars 2. Your order has been submitted and is currently being processed. You will receive another email with the details of your order within 48 hours." i did read ppl usually get the serial key right after the purchase, why do i have to wait, and how much should i usually wait? im kinda bored about this because they actually got my money already but i cant play pof