Finding Younger Brother EP8

is there a way to bypass this broken quest or fix it and move on to
the next scenario?
curious cos the quests have all stopped where i have done them all
up to Undead Ground ...

i have 2 red main left
but they both bugged

1) finding younger brother
2) a piece of map Green Dispear
simp client same issues

thanks in advance

i'm on TGclient..