Plug the USB into a computer with internet access. Open the folder and run GVActivation.exe . This program communicates with the server and downloads the response.key directly into that same USB folder.
If the key still won't download, temporarily disable antivirus or real-time scanning on the online PC, as these can block the .key file from being saved. Version Compatibility edius response.key
Enter your serial number and save the resulting "Activation" folder to a USB drive. Plug the USB into a computer with internet access