yeah sounds like your home LAN is different than the IP of the camera.
The default IP address of the camera is 192.168.1.108, which may or may not be the IP address range of your system.
Unhook a computer or laptop from the internet and go into ethernet settings and using the IPv4 settings manually change the IP address to 192.168.1.100
Then go to
INTERNET EXPLORER (needs to be Explorer and not Edge or Chrome with IE tab) and type in 192.168.1.108 (default IP address of Dahua cameras) and you will then access the camera.
Tell it you are in the USA and give it a user and password.
Then go to the camera Network settings and change the camera IP address to the range of your system and hit save.
You will then lose the camera connection.
Then reverse the process to put your computer back on your network IP address range.
Next open up INTERNET EXPLORER and type in the new IP address that you just gave the camera to access it.