Please don't be discouraged, there's a strong tendency of people here to interject when they think someones frog is in trouble, whether this is the case or not. Sometimes disasters can be averted this way, sometimes the owner just gets annoyed, but almost always they had the best intentions.
I had looked at this post earlier and knowing nothing about waxy monkey frogs went and looked for as many pictures of them as I could find to compare with yours. Lots were rotund little blobs, and quite a few had arms and legs that looked like yours. I concluded that I just don't know what the proportions should be in a healthy waxy, and I know it's really impossible to say anything conclusive from that one photo given how the fleshy bits of a frogs body are kinda like an amorphous blob that does the bidding of gravity.
If you are unsure, I'd take Lynns advice and try to consult with someone who has lots of actual hands on experience with this species.
But please do hang around, those of us who don't have exotic frogs have to live vicariously through the pictures of others here.