Not great condition but rescue is possible (06.05.2021)
As above, all leaves dropped off and looked as though fungus did it. Hot water might have been used to treat, which could have done it. However, all are multiple cane plants, all have good strong new growth, no viable roots. I've put them in moderate light in the greenhouse in a spot where I can water carefully and not much for a few weeks. This species is hard to find in the US so I gave a star for that.