[PS5] Oswald missing Local Coop

It seems someone else also posted :

https://www.reddit.com/r/PathOfExile2/comments/1halqws/no_vendor_oswald_in_act_3/

But I was unable to find it here.

It is the same thing, we've finished the Quest, got the Axe but my wife's character cannot deliver it, she killed the boss by herself and it still not showing up.