I have one working but having trouble getting another to register for the site via the setup wizard.
Suggest the OP uninstalls java then access mydlink.com site.. when page loads it will advise java is required, install form the link provided, once complete refresh the browser page.. java should kick in then a pop-up will ask for permission to run.
check the box to prevent it asking again and select the run button, after that it should be good.