Please be as specific as possible when letting us know what is missing or incorrect. For example, say "this game's trophy difficulty should be 8/10", with a link to a website corroborating this difficulty estimate (if possible), not "this game's trophy difficulty is wrong".
You can redecorate your room by speaking to your room's housekeeper. The purchase of Monster Hunter World: Iceborne is required to use this add-on. ※In order to use this additional content, it is necessary to update your game version to Ver14.00.