You need to get rid of the moss ASAP. He may have developed an impaction from the moss if you are just tossing the crickets in with him. Get him on Eco Earth or something similar soon. And yes, 70 is much too low, needs to be at least 80 and a cooler area. I would soak him in warm dechlorinated water for a few days, unless you are sure he is going to the bathroom. Hope your frog improves!