The App is version 4.27.1.20221018, and the NVR is a : DS-7608NI-K2 / 8P, and the three cameras: DDS-2CD2087G2-L(U).
The NVR Firmware details are:
Firmware Version: V4.30.011 build 200803
Encoding Version: V5.0 build 200706
Web Version: V4.0.1 build 200618
Plugin Version: V3.0.7.21
The Camera...