CCTV camera installed in India - SN when applied does not work in USA

I am in USA and I have the DMSS application on my phone which I use to watch it from USA my home in India. I was moving around the icons and my DMSS icon got deleted and I tried to re-add the cameras to watch again and I am not able to.

I go to DMSS app

1. Click on + sign
2. Enter the serial number manually
3. I do not know any security code (I saw that you don't need it)
4. Click on NEXT
5. I see Add Device
6. I click on DVR/XVR
7. I get the message "Failed to connect the device...

CCTV camera installed in India - SN when applied does not work in USA