The edge might appear dark gray, that is normal oxidation happened during shipping process. Light sanding will remove it.
Because of the difference of humidity around the world, the wood scabbard might shrink or expand and cause some damage. Make sure you store it in a place where the humidity and temperature is stable and moderate.
Someone damage the sword themselves, but push these problems to us. We are absolutely not responsible for this kind of problems. Once the plastic wrapping of the item is opened, it cannot be returned or refund. We cannot guarantee that you have not used the item.