Hi,
You need either the static login code for VCDS or the 7-digit daily code for the immobilizer. Then you can use VCDS to program the key to the other vehicles (without needing help from VW/Seat).
That part about the online aspect is correct to a certain extent; the issue is simply that the customer is not being given this data and information related to the WFS. Depending on the data available on the VW diagnostic tool, the pairing process can also be done offline, although very few people actually do it that way.
You can access the code through various tools, or your VW/Seat dealer can retrieve it via a fax query, which is still possible.
