I've copied and pasted the license string, but it does not work

Make sure you actually copy the entire license string, ie, including your username, which  you entered at the top when you ordered it. If you only take the numbers on the license will not work.

I did not recieve an email with my license - as promised

To often our customers write their mail adress wrong - so the mail does not reach the user. If this happens, please just mail us and we will find your order and send you a copy of the payment receipe ant your license again.