How do I get into the Slytherin common room on Pottermore if I'm not a Slytherin?

Hmm.. well, did you try the Polyjuice potion yet? If you did, then you might be able to get into the common room by going through the chapter, like you always do.. (I haven't been on Pottermore in forever so sorry if I get stuff wrong) If you can't do that, then maybe , try and add somebody that's a Slytherin and see if you can get in then. =/

I don't know perfectly but I've heard that u have to make the Polyjuice Potion........