Right, you got Jessica to 4 hearts to continue that story?
If you did and you got the code from Tom, the lead should say to visit Jessica’s room in the morning.
Dunno if it’s exactly that you’re stuck on.
And all the leads eventually converge in one place, you’ll notice when it happens, that means you need to finish the others.
Dungeon is on content limbo. Arc’s almost considering removing it. Can’t be bothered to explain right now.