If your are unable to see playback on your NVR, please follow the steps to check that:

1) Make sure you have register your device to mydlink.
2) Open a web browser and enter the web address to access the NVR Web GUI. 
If you're still unable to see playback, please re-add your camera to NVR and re-log in to mydlink to see your live video.

If Yes, please check again:

• Ensure you have at least 256K of bandwidth.
• Make sure your device is not being blocked by a firewall or an anti-virus program.
• Reboot your camera and re-log in to mydlink.