My beardie has now been with me for three days has only ate one cricket. but has ate some veg. he has pooed. seems happy enough, jumps up and down his climbing frame.
I had the same problem when I got my first beardie. He didn't eat for four days, then one day i guess he was so hungry he just started devouring crickets. Should not worry, but if it goes past like 5 days then I would say you should consider a vet visit. Hope all is going to be well!