I think I may have sussed out what the problem is. I went to Carphone Warehouse and bought a cheap PAYG mobile dongle(T-Mobile). I disabled the wireless connection and got onto the internet via mobile. At first I was getting the same problem, able to log in to the DVR but no pictures, but then I noticed I was only getting 2G reception. I moved around the house, waited until I got 3G reception and tried again. Lo and behold I got the cameras up working perfectly! I've tried several times since and it's always the same-you need to have 3G reception. So have a look and see if you have 3G reception on your network; apparently, I've found out since, you need this for the streaming video. Hope this helps Albadeel.