For some reason, the buttons used to navigate the monitor's menu have been completely mixed up. I can't move up or left in any menu. The left button seems to be doing nothing. The exit button does the same thing as the right/down button, and the last button (the "e" button) functions identically to the exit button
Image for reference:

So the button under the "e" logo funtions as "exit" Under "exit" functions as the "right" button. Left does nothing. Right works normally.
This is very annoying but I'd be able to work around it if any of the buttons functioned as "left/up" in the menu. Up isn't as important since you can keep hitting down and it just sends you to the top again, but I need a left button to adjust brightness, contrast, color, and to navigate presets. As of right now, the menu is unusable.
If anyone can possibly help me, or at least explain why this has happened, I'd be very grateful.