You can refer to the guide below to enable the UID for your camera or NVR.
Applies to: All Reolink cameras/NVRs (exclude Reolink Battery-powered cameras, Reolink E1, Reolink E1 Pro, Reolink Lumus, and the cameras in the NVR Kit).
Step 1. Log in to your camera via a web browser.
Step 2. Click the gear icon on the top right to get to the device settings page.
Step 3. Click Network > Advanced. Toggle the switch to enable UID.
If your camera or NVR is with an old user interface, you can refer to the steps below.
Step 1. Log in to your camera via a web browser and go to the device settings page.
Step 2. Go to Network > Advanced. Check UID enable to enable the setting.