This happens on the primary box as well as secondary box. If you do not switch the STB on for a few weeks, it will deregister on the TS network and the services need to be refreshed by sending the SR sms to 56633. Not sure why they have set it up like this but it only happens if you don't switch on your STB for an extended period of time. By the way, the same thing happens for Dish TV as well.