EFT does support offline activation. They will go through the activation of the product, let it fail, then select to register online. At that time challenge information is copied to the clipboard which they will need to enter into a text file and bring to a machine WITH internet access and past that next into the form below:

They will then submit the request and if approved will be given the chance to download a product key that must be run on the server to activate the module. After all of the serial numbers have been registered like this you must restart the service.