[Lord Joshua and sculptor's tool]

Thing is I have 100% map completion and done the dungeon. Read the dialog 20+ times and the karma store just won't come up. I've tried with a different character who is lv 400 in jeweler, but nothing seems to be happening. A friend of mine also checked but still nothing.... It's super weird!

[Lord Joshua and sculptor's tool]

I'm having a problem with gaining access to Lord Joshua Karma Store so I can but the sculptor's tool for my Juggernaut. Does anybody know how I can gain access to it?