Hello Lennart! According to our records, your two-year license for avast! Internet Security was sent to you on July 10. If you didn’t get it, it probably ended in your spam box. Anyway, you can get your license file easily by filling up this form: http://www.avast.com/resend-license-paid.php.
If you have any problem, please contact the support team at https://support.avast.com/Tickets/Submit.