I had the same problem. Everyone: I believe it will let you pick whoever you picked last week, but only that one. I picked the Weaver last week and she was the only one that worked. Someone else mentioned they picked the Vizier last week, and he was the only one they could choose.
Blizz still needs to fix this, though. But for this week, pick the same. Better than nothing.
I tried to pick Vizier this week, but I tried to disable addons and log out and back in, and it would not accept me picking the Vizier. I tried the Weaver next, and the same issue. I picked General, and it did let me finally accept the quest, but it was the same pact I selected last week. Hopefully, this will be fixed next week.
I expected a fix for this tonight. Going to miss out on world quests at this rate unless I suck it up and pick General again. My Vizier rep is in dire need.
I think I get whats going on, the warband flags all your characters when you pick a pact to all have the same one. But the reset didnt clear the selection from last week.
Logging on to alts I didnt do much on I could see the General, that I picked last week, standing there with his quests, despite having the Pact selection screen available.
However, the ‘form a pact’ quest is missing form those alts that didnt do any of those quests last week.
So long story short; game assumes you are still on last week’s pact due to leftover flags on alts due to the nature of the account-wide selection of pacts.
Last week I picked the General, this week im trying to pick the Weaver. Quest will not let me complete even after clicking. Click “Aid the Weaver” prompted with “This choice will affect all characters in your warband. Continue?” Click “Okay” nothing happens. Even after trying the Vizier, same thing. I will not, the General is standing beside the table with his name tag as orange. Disabled addons, dropped the quest, nothing. When I tried the same thing with the General (I did NOT want to pick him - he was my choice last week) the quest completed…