multiple nvr access issue

Hi,

I have just installed 45 cameras on 3 Samsung nvr xrn1610s. I have set each on different ports, 85/90/95. I have ddns set up on each nvr

When I access each nvr individually everything is fine. But if I try to access them simultaneously it would not work.

For example.
If I open browser and access nvr 1 through its ddns link. It’s all fine.

But as soon as I access nvr 2 through its separate ddns link it goes straight to nvr 1.

Any idea how I can access both nvr at the same time...

multiple nvr access issue