It died.
These amazing frogs are flowing into the country again now...must be that time of year. Many of those being sold are being sold as "farm bred". I have no idea what ramifications that will have on their success in captivity, but hopefully it will help.
If anyone buys some of those coming into the country, I would be VERY grateful to know how they do for you. I have been wanting to set up a 75 gallon display tank for one of these aquatic giants since about 1992. But many years they don't even show up, and when they did, the three perfect frogs I got were dead in around a month. As you can read above, they all died of the same ailment.
If you buy them, as soon as (if) you see any cloudiness in their eyes...get them to a vet if you can afford it, because they are most likely going to die.