Your frog needs time to acclimate to the new home. It is very stressful for them to be packaged up and the dropped into some place unfamiliar.

Give the frog time to settle in. Usually one would make sure you have the right temps, humidity and the tank is ready for them. You want to limit how often you go into the tank or rearranging things. Provide a day night light cycle and have the tank in a low traffic, quiet area. Outside startling noises, people passing by, all will create stress and cause the frog to take longer to acclimate to the new home.

If you have a shallow round cereal or desert glass/ceramic bowl, use that to pur the crickets in and have the bowl sunk into the substrate so the frog can see them and get in and out easily.

relax, sometimes this process takes weeks and the more you relax the better off he will be.
Just watch weight and physical condition of the frog over this time.