Night light not working on external monitor - Win 11

[Microsoft Windows]

Hi,I connected the external monitor Philips 246E9QDSB through HDMI cable to my IdeaPad Slim 5 14Q8X9, but the night light is not working on the monitor. Win 11. F.lux does not work either... It used to work with my previous Dell laptop on Win 10.The night light works on the laptop okay, but not on the external monitor.Any help?

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