Response from logitech was that all Harmony remotes have a 1 year warranty in NZ. I then pointed out that the new Elite has a 2 year warranty, and so thought maybe the Ultimate (which is the previous flag ship) may also have had 2 years. They came back and said "I checked our Harmony remotes warranty and confirmed that Logitech hardware warranty has only 1 year coverage".
Interestingly, the hub has started to work again (see my other thread on the Home Theatre forum if interested in specifics). If it starts falling over again I'll be onto the retailer.
Did you mention the CGA to them? You can go to the NZ distributor/importer who is considered to be the manufacturer. You just have to ask Logitech who that is.
Logitech doesn't have any reason to be concerned with the CGA, since the law applies to the retailer, not the manufacturer.