Hello I have a 1 day old DS-7616NI-K2/16P with POE. I use the build in switch and connected 6 new Hikvision cameras DS-2CD2155FWD-I 5 MP. I use the 1 + 5 liveview and all works as expected except there is a problem making the whole setup unuseable and I will soon return it to the shop if I can't...