lg 27ul500p calibration tool issue

as I hope you can see in the pictures, I set everything as the calibration tool’s guidelines say: colours to PC rbg and high on the monitor, colour temp to medium, black enhancement to 0, DFC off, brightness to high, but I still cannot see the eye. I can see it if I switch to 8 bit colour depth and standard colour space but am I gonna lose colour depth this way? and, this way I cannot make the closed the to disappear, making all this useless. I’m using hdr 10 and 4k