Welcome . Have you tried crickets, cut up red worms, or dubia roaches? You may have to use tongs and wiggle the food in front of him. They like moving food. The food should be no bigger than the distance between his eyes. He should be fed daily until he's an adult.

There is a great care article in the care article section here also. It will give you lots of information.

Try covering 3 sides of the tank to make him feel secure.

If you temps, humidity, and day/night cycles are good, he should adjust and is probably just stressed from the move.

Remember to only use dechlorinated water to mist tank, for water bowl, and to moisten substrate.

Use amphibian calcium/vita D3 powder lightly dusted on his food every other feeding, and herptivite or other amphibian multivitamin powder dusted once a week.