From the bloating I would say that your toads had an infections, the mangled looking legs could be form a vitamin deficiency.
The reason why you have all male green treefrogs is that males are easier to catch. The sing and give away their position, while females don't. All green treefrogs, Hyla cinerea are wild caught and so are some White's treefrogs (aka Australian green treefrogs), Litoria caerulea.
Good luck with your new guys and check out our care section if you haven't done so already.