To all who had LVT on the exchange altmarkets.io : please contact the exchange through their support ticket system to ask your LVT back. We can not help you with that and we do not know why they delisted old LVT. First we paid them to list old LVT, and second we paid them to list new LVT as LVTN.
LVTN has never been listed and for unknown reasons the exchange delisted old LVT. The old LVT blockchain is still running OK and has been running OK all the time, so it is unclear why the exchange delisted old LVT and made the LVT in their user accounts unavailable.