At first, please make sure to connect with internet when you register PTZ Controller , since the registration code will be verified on our server automatically.
Secondly, we suggest you copy the code to the registration edit box to avoid typing mistake.
Thirdly, if you are sure the code is available and the computer is connected to internet, but can not register. You need to shutdown the antivirus software when you register.
If there still has problem, please feel free to contact us.
support@serialporttool.com