When the polyps look like someone has pulled the skirts down like the one in your picture is called "Umbrella Syndrome", its known to happen to People Eaters palys, like blue agaves, red people eaters, etc. it seems to be a sign of stress or discomfort due to lighting . Try moving them to a more shaded area in your tank and see if that works. it looks like is going to recover though. The polyp looks healthy just with a weird umbrella shape.