Has your routers FW been updated? there is new FW for it.
Just as a test, disable WPA security on the router, Does the camera connect then? Re-enable after testing.
My Lynksys router is up to date and I have tried using only WPA2 instead of WPA/WPA2 w/o any luck. As noted by others, this looks like a firmware issue, but I'm now wondering if the 1.02.05 version is also having issues after several days of usage. I'm not getting any video at all. Let's throw this is into the mess - I'm also using cammy app to capture snapshots onto the cloud for free (I think it's pretty good for being free). The camera was working for 1.5 days w/ the 1.02.05 firmware. Now no video via mydlink home and mydlink+ apps nor using the IP address for the DCS-2330L camera. My other cameras, two 935L and one 933L, are still working after firmware updates.
Here are links to the 1.10.07 version:
LINKS REMOVED!1.02.05:
ftp://ftp.dlink.eu/Products/dcs/dcs-2330l/driver_software/DCS-2330L_fw_revA1_1-02-05_eu_multi_20141224.zip
I'm in the US, so perhaps I'm supposed to use the 1.02.03 firmware? I'll try not using the cammy app too, but the 933L has been working with cammy for several days now.