The same thing happened to me though I think it was due to nitrogen overdose. I mixed some soil too strong and lost 4 plants out of ten.
5 strains growing, some plants were fine and showed no signs of wither.
This pix has half the room, some fine others going to hell. I transplanted these in the new soil 2 days before.
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Below are 3 Ice plants. The one on the right had no problems. Not pictured are 2 Papaya plants, well, maybe the leaf in the lower left is a papya.
It seemed like ph lockout but the plants would not take water (by the looks of it).
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Not sure I'm right about the nitrogen. Same transplant method last week with normal soil and all is fine this time.