Have you tried your cam outside at night on a scene without so much grey -the main part of your scene is concrete. If you try this and still have so little clarity my guess is that you have a problem with your IR lights in the cam and should Open a support request .
If not and you have a good picture in a more contrast and detail area then outdoor IR LIGHTS are an excellent and fairly cheap option.($ 9.99 up on Amazon)
It was, but that is the exact one I am using and I am not seeing that issue, so it is not the enclosure. There are some I have seen that reflect enough of the IR light back into view that it washes out the image.
Oh, it’s the enclosure all right. Put some black electrical tape on the edges that protrude past the front of the camera. The white edges are reflecting the IR lights back to the lens. If there are any other surfaces close to the camera like a wall, change the angle of the camera away from it.
The small round black item below the lens is not the “IR thing”.
The four IR LEDs are located around the lens, behind the bezel which surrounds it. When active (in the dark), you can see the LEDs dimly glowing red.