It looks like its knocking on deaths door. Bleached, inverted mouth, and unwilling to attach are all bad signs. Reviving it will be difficult but not impossible. Mine was bleached white like that when I purchased it several years ago and it managed to pull through. It should accept pieces of silverside, krill or raw clam meat if its tentacles are still 'sticky'. I hope your tank is at least a few months old... judging by how white your rocks are it looks like you just set it up which is also to your disadvantage. Anemones can be pretty delicate and an immature tank isn't very suitable for them. Do you at least have some intense lighting?
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