Yes, thanks for those suggestions. I can do all that. But Avast should not require that to download, and it's the only website that has created this issue.
Since Avast is a security company, they know the value of security, and should not be forcing users who might not be so well informed from making such changes. In my case, I already cleared the cache and reloaded the page. But it could be Spybot, a hosts file, no script, etc. and its a pain to have to disable them all just to SEE if that might permit the download.
And there is no such problem downloading the VPS update, so you are probably right that this is an advertising issue and advertising should not force the disabling of security.
P.S. Your English is nothing to apologize about. It's better than many native speakers I know.