IPcam C24s connected with NVR N800P but dark screen

Hello, I am now using NVR N800P connected 3 Ipcam ( C18s / C32s-X4/ C24S)  and they have been working just fine. Recently, I bought another Vstarcam C24S as 4th Cam. I did install and connect to APP EYE4 and everything seemed to be working properly. However, when I connected new C24S to NVR , the network has shown the CAMERA and NVR were completely and properly connected but there was no image on screen ( the other cams working properly with image shown). I have tried to config all settings but didn't work.

Please advise

I've got same problem posted in another thread waiting for a good response as follow.

Hi,
I tried to connect my new C24S to N8216-2 with no success.
Both appliances have the latest firmware.

I got the error "Resolution too big".
and after changes to the System Modes to accommodate 3MP, 5MP now I get "Connection failed".

Please verify that C24S can work with N8216-2.
I can connect C24S with third party software like Blue-IRIS with no issues.

chimbkk replied at 2021-10-26 13:47
I've got same problem posted in another thread waiting for a good response as follow.

Hi,

Dear customer ,
Thank you for your feedback!
Please adjust camera resolution in the Eye4 APP first .
Also , enable  the camera 's plaintext password in the APP .