How is the download page protected and what keeps someone from coping the download page and giving it out?
You do not need to worry about the download page once the Virtual Vault protects your product. Even if people discover the download location all they will get is a locked file, and without a valid access code this file is useless. (People can only obtain an access code if they’ve purchased the product or if you generate one for them using the Master Key. Access codes cannot be shared).