There are following possible causes:
If you have not received anything within 3 hours after completing your online order, please follow these steps:
Please make sure that you have completed all the necessary steps in your PayPal account to complete the payment procedure. Your order can only be processed after your PayPal payment has cleared. Sometimes it may take an additional time for PayPal payments to clear.
Bank transfers and purchase orders are usually processed within 2 weeks from the date you submitted your order. This is because delivery can be made only after your payment has been received in full.