I have a 4 channel Zmodo replay NVR and two Zmodo Smart PT cameras. Using Zviewer 188.8.131.52, I can view all individual cameras fine.
1) When I first installed the program, I could click on Ch1, Ch2, Ch3 ,or Ch4 under the NVR group and see video from each camera attached to the NVR . After I changed the password from the Zviewer default to match the password stored on the NVR, I do not see any video, just a gray colored window. I know the new password is correct because I can playback video from the NVR and configure NVR settings.
I tried uninstalling Zviewer and reinstalling it but I still can not see live video when I click on the individual channels of the NVR. But I can see live video when I click on the individual cameras directly. Recorded playback from the Replay Hard Drive always works fine.
2) On the Smart PT camears, I can watch live video fine but I cannot playback recorded video from the MicroSD card.