Can't use avg on desktop

I cannot use avg on my desktop. I have a 12 month license starting from 12/²014.
IIt keeps ggiving an iinternal eerror ccode w3ther I click on the icon or try to use Firefox to goto www.avg.com.or click on "AVG Support Center" from the order confirmation email.
TThe ddownload bbutton doesn't 2ork from  I can only he to avg from my tablet.