Hello and welcome to FF! Don't understand how do you keep Pacman's on paper towels with a source of heat underneath them and one of them without a water dish. What temperature and humidity parameters are maintained in the plastic shoeboxes?
Feeding your frogs a high fat diet (goldfish, superworms, mealworms, and waxworms) and pests you find in your house is not the healthiest nutrition for them. Here is some more info about their care:
Frog Forum - Pacman and Horned Frogs - Ceratophrys - Care and Breeding. Good luck

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