Hi,
I have been trouble shooting why I am not able to see the Live video when accessing the camera/device over the WAN (internet) directly.
After weeks of spending time, I have been told that when a camera is registered through mydlink, there is a conflict with TCP Port-80 and that will prevent viewing the live image directly in the Camera over the internet with the WAN IP address. Everything works fine when viewing over the LAN.
Summary: Enabling mydlink account will automatically prevent the direct access to the camera live image page over the internet (you can still see the setup page etc).