Have you tried dragging the clip to the attachment slot? Just pressing R for reload doesn't work.

"Dayz" is not a fitting title to the problem you are representing. I would recommend English as well. I do not know the developers knowledge of Russian. But I believe it'd be more fair to presume English as they consist of an English team.

Typing "please read" is not going to make anyone pay more attention to it. Rather people will ignore you for trying to overthrow their attention more to you than to others.

In T118063#1466261, @Aldink wrote:

Morgow sometimes don't work the slider in-game... I fixed it everytime by going out of game (Alt+tab) and joining back.

Good riddance, that thing was just an exploit at night times. If you have problems with gamma and brightness, you may set those through windows or other programs. If calibrating the monitor or through windows isn't enough, I recommend getting a new monitor for your system.

What was the Error message?