I’ve got one of these for the GS, yes the previous companies wre purchase by Vodafone. After weeks of chasing Vodafone they eventually managed to find the serial number of mine on their database. However they told me that due to age they would not be able to get a signal!
Their only only option to me was to remove the old kit and install a nice brand new Vodafone branded box at a one time cost of £1000.00 and the yearly fee of £300.00.
I have to have this as part of my insurance even though it’s in a locked garage so I’m investigating a different insurance company that does not deem this mandatory and/or an alternative supplier for the tracker.