Hi,
First of all, I want to say thank you for this is a great package.

Sometimes my client gets a WebException error - The remote server returned a (403) Forbidden error. The client only gets that error when they connect to the VPN but it never happens on my PC even though I connect that VPN too. I'm not sure why they get that error. I tried to download the zip file from their PC, sometimes I can download it, or sometimes it fails when it gets around 97%.

Not sure but I think the cause could be the request timeout, so is there no way to increase the HTTP timeout?
So can you please give me a solution to solve the problem.

Thanks