1.Please set up UPNP in both ip camera and router, however, UPNP is not a standard worldwide, and not all the device support UPNP, so if the UPNP does not succeed , pleaase do port forwarding manually in router.
How to make UPNP:UPNP: http://www.tenvis.com/web/enshowkb24.html
How to make Port forwarding: http://www.tenvis.com/web/enshowkb30.html

2.Pleae set up DDNS and login in the camera.

If your label on the camera's DDNS label does not contain port.
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Please view this article for help:
http://www.tenvis.com/web/enshowkb28.html

If you camera have a port on the DDNS label:

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Please view this article for help:
http://www.tenvis.com/web/enshowkb29.html