This manual applies for the following models of NVR:
ZR04RN; ZR04RM; ZR08RN; ZR08RM;
(You can find the model number on the label at the bottom of the NVR.)
If your NVR's Device ID is 12 characters, you should use Zosi View app to view your cameras
A. You can find the DVR's ID on the label of the NVR.
B. Or you can also reboot NVR and wait until Wizard Page display, then find the UID/Device ID.
If this can't help you, please feel free to contact us.