Hi
@yves
Where are you trying to access playback? Direct HDMI monitor, browser, or Hik-Connect app?
Is it only one camera on the NVR that you can't see playback for or is it all of them?
Have you recently updated the firmware of the NVR and/or cameras? If you have, were you aware if the playback was working before the update?
Can you share screenshots of the NVR storage menus and the recording schedule?