One thing I just checked on and thought off, since I use static IP addresses for my camera and NAS, I thought instead of having my ISP DNS addresses set for both static places, I changed the primary DNS address to my routers IP address, 192.168.0.1 and now I'm getting connected via the MDL web site. I also did a reboot of the camera as well. uPnP and uPnP Port Fowarding are both enabled.
Might give this a try on your DNS units...