Hello and welcome to FF! Your White's is suffering from TOS "Toxic Out Syndrome" because of chloramines in tap water. Frog stopped going to water dish because it's poisoning it. You need to get a dechlorinator like Seachem's Prime or ExoTerra Aquatize and use it to treat his water now. Once you treat water fill dish to frogs chin and place it there so it can detox. Also, change water daily even if clean.

The enclosure you have does not work well for tree frogs where a vertical disposition with more height than floor space is preferred. Also, White's are large frogs and the minimum height recommended is 24 inches. IRT temperature Whites need 85F daytime with around a 10F drop at night. Ventilation is more important that humidity and they can handle 65-70%. Need to get gauges in there so you can monitor properly and a dual digital model is the way to go.

Crickets should not be thrown into enclosure until all are eaten. They need to be fed or "gut loaded" with carrots, oats, lettuce, and veggie fish flakes for 24-48 hours and then fed to frog. All uneaten crickets should be removed from cage early the next day as they will loose their nutritious value and even could pester and bite frog causing more stress or even an infection. Crickets should be sized same as distance between frogs eyes and dusted with CA/D3 2X and vitamins 1X weekly on different days with skip day in between.

That substrate should be replaced with damp shredded coco mixed with dechlorinated water, damp unprinted paper towels or even damp clean rags. If your frog accidentally ingests a piece of bark while catching a cricket, it could get impacted and get sick or die. Also, the substrate was sprayed with chloramines in tap so it has to go now as part of frog's detox.

Take care of water and food issues now and then start planing on new enclosure soon. Hope we are on time to turn health issues around and good luck !