I am going through the same thing- only mine are firebelly toads. I have read that they will not eat unil they have absorbed their tails. Then they will eat pinhead crickets, flightless fruit lies and springtails. Mine are no longer interested in the tadpole bites either. Good luck with your frogs.
Also mine have not eaten yet since coming onto land, but they still have their tails so I am hoping in the next few days they will start to eat again. who knew something so small could cause so much stress! lol!