Can't turn on "WDR" on DS-2DE4A220IW-DE anymore (worked before)

Hi.

I have a Hikvision DS-2DE4A220IW-DE IP dome camera.

And I can't turn on "WDR" anymore. It automatically disables itselfs.
Reboot did not work.
I tried IVMS, but there are zero adjustments possible.

Any ideas?
Here is a video:


Thanks,
Roelli.