I have had two beautiful phaelonopsis orchids given to me as gifts recently - they arrived with beautiful flowers already open and several small buds waiting to bloom, and within two weeks, the buds are starting to shrivel and drop and the flowers dropping. They are away from windows in a dual aspect bright room, not near radiators and have been spritzed with plain water once per week. I had two of the same plants last year and killed them both quite quickly too - they were on a window sill so I've moved these ones but they're dying anyway. They're not sitting in water either just to add 😫