(something) is out of whack
Things that are "out of whack" are not working properly.
Things that you can describe as being "out of whack" include systems like:
- a person's body cycles, including digestion, menstruation, and sleep
- the climate in a certain part of the world
- a company's communication system
This is a very casual, colloquial phrase. A more formal way to say "out of whack" is "out of balance".