Can't get license

I purchased the full version of Avast and I couldn’t download the license for it to my PC. Purchase date was 04FEB15. What or who should I contact??

it should be in the mail you got from avast

avast FAQ https://www.avast.com/en-eu/faq.php
FAQ Videos https://www.avast.com/en-eu/faq.php?q=video#searchForm

If not contact avast here https://support.avast.com/

Have you tried the Resend avast License http://www.avast.com/resend-license-paid.php, you will need to enter the email that you used when purchasing the license, e.g. the one that the original email with the link was sent.