How many days have you had it?
It will be very stressed from moving, and possibly still stressed from shipping unless you got it from a local breeder. It's normal for them to go off food for a while while adjusting, just leave it alone except to offer food once a night, be sure to leave the crickets in there for a while so it has time to hunt.

If it's been over a week and yours is like mine was (she went off food for weeks) don't panic, like I did, just post your setup to narrow down what's wrong, she should eat once she's hungry enough. Maybe try smaller crickets, a large could be intimidating to a small frog, mediums seem about right.