Need help with DLINK DCS 2330

I have been using this camera with no problems for several months and in the last 2 days Smartthings has been unable to connect to camera. I use DLINK Connect device. There have been no changes to the system except for a NVR added to network over a week ago. I have tried rebooting all components and also uninstalled device and reinstalled with no luck. If anyone has thoughts please let me know. I have included the error code from the log. Thanks

11:49:54 AM:
error, videoCoreVersion=, dth=D-Link Camera, 

deviceId=xxxxxx, dni=B0C5xxxxxE5,
statusCode=404, errorCode=21, errorBody=[message:Camera is unavailable,
streamId:hls1080p, code:21]