Registration, Will Not Let me

Avast Free Antivirus / Premium Security
1

Needed to uninstalled & re-installed Avast, which I did. Once re-installed, it will not let me register Avast 2015, pleas any help to how I can do that, & Thanks! I have Windows 7.

2

http://www.avast.com/resend-license-free-antivirus.php
http://www.avast.com/resend-license-paid.php