I have had the same thing going on with my White's for a few days. He's been non active, at least not as active as he was a few days ago on his hyper streak, and falling asleep in his water bowl again. This could be because of the temperature fluctuations I'm experiencing in CA right now. It was pretty warm for a couple of days following a pretty cold spell, and now it's cold again. It rained all day Sunday (hasn't been rain for a few weeks) and the wind was incredible. Yesterday it rained for a bit in the morning and was cold after that too...I think his lack of activity may have to do with this.

Have you experienced anything like that where you are? Weather changes I mean?

And taking a loot at your tank I gotta say it looks pretty barren. It would do well if you got the little guy a plant to climb on or hide in. Tree frogs are arboreal and I see you have a tall tank, you should try to utilize that vertical space with fake plants or real ones, vines, small trees or branches, etc. My WTF has a tank that looks similar to yours, an 18x18x24 Exo Terra, and I have stuff on the ground so he can hide and stuff going up high so he can climb. I think you should add more things to the viv and give him more to do. He could be bored. =shrug=