999's setback is a paper note in the Fallout 76 update Wastelanders.
Inside the Grafton Pawn Shop, on the welcome mat at the front door after entering.
I know we had an arrangement, but my side business has major, MAJOR issues. I have to skip town. I think I got your Switch automated right. If you get back before the deadline: DoWnWithTheMAN!.
If I get back in time, I'll take care of it personally. You stay safe.