@David-TP 

Hi David, thanks for your response. These are separate and independent devices, in different sites. The Deco devices are running from standard broadband routers as provided by the ISP, and with the TL-MR6400 router, it was set up in our office with the Tether app so we can remotely monitor the data consumption and prevent overuse, and shipped out but has since disappeared from the list of devices. I am hoping that when the staff on site eventually get around to setting it up as instructed that it will reappear.