If you get an error "Cannot activate Win2PDF online. Please contact email@example.com, is it most likely an issue with your PC's security settings.
The Win2PDF activation process uses an internet connection to authenticate the license. If your PC does not have an internet connection, or if you have a firewall or security application blocking access to the server, then we'll need to create a small offline activation program that you can use to license the software. To create this program, we'll need your order number or license code, as well as the organization name this is licensed to.
You can either try to temporarily disable the firewall to complete the activation, or you can send the license information to firstname.lastname@example.org to create the offline activation program.