Yes to what was said already.
I have seen this problem in Dendrobiums. It is usually from root damage. No roots = insufficient hydration = accordion leaves.
Check the roots. Gently remove the plant out of the pot and actually inspect it to see what the roots look like. Do not just look at the canes, leaves, or flowers and assume there are living roots on the plant.
To remove the plant from the pot, it is safer to wet the potting medium thoroughly first. Living orchid roots are less likely to get damaged when they are wet (they become less brittle and more pliable).
Posting pics are preferred whenever possible.
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Philip
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