I have 3 Samsung SDE-3003N DVR recorders. I am trying to set them up for remote viewing via the iPOLiS or Wisenet app however I can not seem to get a live view . I can get to the DVR and see the cameras but it is just a black screen. The same thing happens if I try web-view with Explorer. Anyone have any thoughts as to why. I updated the firmware and bypassed the firewall.