1. The NVR plugins can be used on NVRs with FW v1.4.14 or earlier.

2. The DVR plugins can be used on DVRs with FW v1.4.5 or earlier.

3. This issue occurs on NVRs/DVRs with plugin version 2.0.(v1.4.7 or newer versions NVRs; v1.4.0 or newer versions DVRs)

4. To fix the issue, please install the BETA plugin first, then access the device web interface and see if it works on your end.