Can't Update to AVG Internet Security 2015

Christian, Did you follow completely the content of this article (https://support.avg.com/SupportArticleView?q=upgrade&urlname=How-to-upgrade-AVG-8-5-9-0-2011-or-2012-to-the-latest-version&l=en_US)?.
AVG Guru

 
 
 
 
Dear AVG technical support,
i need your help.
Have held a license for 2 PCs for 2 years of AVG Internet security purchased on 31/07/2013.
Today I tried to update my internet security from version 2014 to 2015, but I can not because during installation denies me because he says that my license has expired.
I thought I had done something wrong in transcribing my serial, so I proceeded, through your pages dedicated to the recovery of my license, which I reported exactly and even in the mail is specified the exact expiration date 07/31/2015 .
Could you kindly help solve the problem?

Christian, Did you follow completely the content of this article (https://support.avg.com/SupportArticleView?q=upgrade&urlname=How-to-upgrade-AVG-8-5-9-0-2011-or-2012-to-the-latest-version&l=en_US)?.
AVG Guru