Help With Ganons Return?

😊 waz up ever one out there agin i just download ganons return from quest database and i was playing the game and its a nice game but why is it that when i go inside the winmail there are some stairs to go down but it wont let me go down when i try and theres other places that i cant go in to is there any that i can do to fixs this or is it that the quest is not done yet can any body help me with this 😞 thank you