From the beginning there has been an “Unknown” device on my network. The usage is always 0 hrs 0 mins. It also says Currently On Network. First, this is upsetting because it looks like some kind of intruder. Second, it is at any of my devices since all my devices are labeled correctly. Third, it would be helpful to have a way to manually remove a device from the active and the inactive lists. Fourth, any suggestions on how to get rid of this?