I am unable to download the program: installer for the amazon games and software downloader.

It says "make sure that your anti-virus, firewall, or network settings are not blocking the game or software from accessing its activation server."

You could try temporarily disabling Webroot to confirm that we are the ones blocking it and not some other firewall setting on your machine.  If it does turn out that Webroot is to blame, then you can let us know and we can whitelist the application on our end so that it fixes it for everyone else who uses Webroot.