The link doesn’t work because of the spoiler tag. If you move it outside its bounds, all will be well.
Now, as for your questions, I think poking about in the lore wiki will help answer most of them.
Spoilers abound there, of course:
https://thefifthcity.fandom.com/wiki/The_Seventh_Letter
https://thefifthcity.fandom.com/wiki/Judgements
https://thefifthcity.fandom.com/wiki/The_Echo_Bazaar
https://thefifthcity.fandom.com/wiki/The_Masters_of_the_Bazaar
edited by Miss Verity Green on 2/14/2020