So I just started playing this season, and i’ve completed the “A Shop of Curios” just after you unlock this seasons reward bord. to continue the quest you have to talk to Sayeen, who is next to the board. But for me, she is gone. I have no clue if I am missing something, or if the quest is just softlocked.
maybe she went inside. there’s a shack there also.
No entrance sadly 
that’s unfortunate. good luck.
I was indeed missing something. To progress further in the quest, you have to get higher ranks in the unveilers oath
happens to me a lot like that. missing something, trying to read and figure it out… still misses it. seems obvious once i find it but maybe it actually isn’t. it’s not like the quests make much sense, just follow the gps.
go inside m8 just click the door.