I'm trying to get to the next level in year 7 part 1 but I'm stuck on the sidewalk outside of the coffee shop. The ghost studs lead to the corner right past the coffee shop and there is a pink platform nearby and random muggle I can move with magic. Hermoine doesn't do anything when I try to use the pink platform and I can't seem to get out of the area. The ghost just disappears where the blue arrow is and I can't follow. Help?!