Welcome to the forum! Please make sure you read the pacman care article. Details on the enclosure and conditions would be very helpful; pictures are helpful too. Make sure you are using de-chlorinated water. Yes, pacmans are often stressed by moving to a new home and it can take them a few days to adjust. It is important to reduce stress as much as possible. Keep the temp and humidity up and consistent. Reduce visual stress by covering three sides of the tank with some sort of background. Don't handle the frog, except when necessary. Observe him but try not to disturb him. Offer food each night. You can also break the hind legs off the crickets to make it easier for the frog to catch. Please keep us posted.