Bro, did you literally make an account JUST to post this? I really don't understand how the whole door code thing stumps people. Before you get to that door, Hazel tells you the code and then, within a few clicks, you need to put the code in. Did you forget what Hazel said? Okay, you can scroll back, click back, or check the dialogue history. All of these tools are available to you. I make games for adults so I expect a level of reading comprehension.