avtechuser

hi all, just purchased a avtech dvr675, all temporarily wired up and connected. however when i try to do any form of remote viewing all i get is a blank screen where the stream should be. initially i tried it on my phone and although my phone connects to the avtech and displays the 4 channels on screen, no picture is displayed in any of the 4 boxes. So i installed videoviewer on my laptop and same again it recognizes the box and i can even control the avtech-dvr from the software but cannot seem to get any video stream from it. So having tried both my phone and windows i know its not related to anything im doing but moreso something with the avtech dvr itself the unit itself is fine and gives a picture from the cam connected to it however any form of remote accessing and i dont get a picture. Was hoping if somebody could help as to where im going wrong or have i got a faulty box.

thanks for the advice. finally have managed to connect the box to my tv and wire up. oddly enough it works know and i do get a picture on my phone. only issue know is that it only works when i use it with wifi inside my house. if i try remote viewing via my phones internet it doesnt work and shows invalid ip. so i guess i need to change some settings on my router right?

.... been trying all sorts and still no luck, just the blank picture, did one manage to get a still image on it, so signal is coming through but just not displaying what it should