Do you already set the three forward ports for sdk port, http port and RTSP port on remote router ?
You enable to access ip camera by using firefox as HTTP://CAMPAGNA.NO-IP.ORG:8000 as above, so you already set the forward port "8000"
for http port but NVR uses SDK port to connect camera...
I don't know your NVR model, so your NVR 7608 has 8 POE ports, Right?
If it has POE ports, you must connect camera to NVR POE port in order to NVR can see camera. The ip camera will be assigned ip address on range 192.168.254.X.
If your NVR 7608 does not have 8 POE ports, you add camera by...
I see, Your NVR and your camera are the different locations, and you would like to make connection together through internet, Right?
If your 7608 which has internal POE port, I think you add camera only using POE port. 76087608
You already have no-ip ddns, then use it. Just set up the forward ports on your router to NVR (SDK Port, Http Port, RTSP port).
On IVMS-4500 device setting, set mode to IP/Domain and set address to your no-ip ddns.
No need to use HiDDNS or ezviz.
I just bought DS-7616NI E2/P8 (English Version) and IP Cameras(DS-2CD2032, DS-2CD2332, DS-2CD2132F-IS),
all cameras are chinese version with 5.2.5 multilanguage firmware, from Aliexpress.
The firmware version of NVR is 3.3.1 with english language only. I connect all ip cameras to NVR by using...