There maybe some compatibility problem with third party software, and I recommend you to use camera control tools instead.

Maybe you can follow the FAQ to reconfigure it. http://www.tp-link.com/en/faq-820.html

you can change the password of your NC450, and keep your cloud account as a secret.

NC450 and NC210 have the cloud nitification of motion detection, which can be control and scheduled by phone. Our NC200 use smtp serve to send this email, don't support APP control.

Password changing function is a new function added in tpCamera V2.3.11, mainly to protect your smart camera from being controlled by hackers. ( Ammerican DDOS Event in October remind us to improve...