Why cannot I choose the resolution while logingg in the NVR on local display?

The Brickcom NVR local display development currently base on resolution 1024x768 and 1920x1080.
These can satisfy the most of main stream monitors.

If users cannot choose the resolution in the login page of local display, it is suggested to change the monitor resolution to 1920x1080 or 1024x768, then reboot the NVR.