Hmm, are you misting at night or in the morning? You should mist just before the lights go out at night (7-8pm). Just mist so that water droplets are on all surfaces. Sometimes new cages need to be "broken in" with the humidity cycle. The meter may be bad, they aren't supposed to get real wet so that can mess them up. Honestly though, we dont even keep hygrometers in our collection at all anymore. We just mist once nightly and they all have good sheds.