are you providing any lighting? I give all my animals full spectrum lighting for a proper day and night cycle, keeps them happy and feeding. I use a plug timer keep it on for no longer than 12 hours per day. Irregular day and night cycles will stop animals from eating so at night if you have any lights on in your room unless dim they can cause problems. Remember if you're using a heat mat to put it on the side not bottom and connect it to a thermostat, the temperature of a heat mat can only be monitored by a digital thermometer, not gauge. Try putting temps up to 84 during the day and as said humidity should not go over 80% so cut down on misting.
The 13W light in a light dome is enough
http://www.exo-terra.com/en/products/natural_light.php