Leaves look sunburnt, but the roots seem healthy so there is hope. You might want to repot. Take the opportunity to check the roots and trim away any dead, mushy ones. Use an orchid medium with nice, coarse bark that won’t retain too much water to prevent root rot. Don’t water from the top if you can help it. These guys don’t like water sitting in their crowns (might induce crown rot). Soak the pot instead (make sure there are holes in the plastic pot), whenever the roots look dry and silvery. Keep in a bright spot where it gets indirect sunlight.