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If your supplements are older than 6 months, or not stored in the fridge, the Vitamin D could be degraded. But since you supply UVB, that's not likely an issue. You don't mention that you actually test the UVB lamps (I suspect you don't), so it is hard to say what's going on there.
The main thing that stands out is that you're not providing any usable Vitamin A -- there's a lot of evidence that frogs don't metabolize carotenoids to Vitamin A. Those symptoms are consistent with hypovitaminosis A, though frogs often show trouble feeding ("short tongue syndrome") before they get as far along with general degradation as your description of yours suggests. Switching to an adequate supplement -- Repashy Calcium Plus is the best -- is a good idea to keep your outwardly healthy frogs in good shape going forward.
If it were me, I'd euthanize the two that are suffering. I'm sorry this happened.
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