The AFA updates weekly, and if I recall correctly it is Wednesday night that they update your on line information.
They close down the minute the AFA closes down for Xmas break and do not change anything until the AFA comes back. If next week is a month, that places you when they shut down for the break. Which means when they started to spin back up this week, they have a ton of names to input.
As far as the MOC nom is concerned, it really is multiple things.
1. For the AFA you are broken down into regions and alphabetically. You might be in the A-L from the Mid-west and it has yet to show up because they were flooded with MOCs noms for that region and a lot of A-L, however, the candidate that is M-Z in the same region may show up because there were less on the list.
2. Our DS found out 2 of his 3 noms before any letter showed up through the site. The 3rd appeared weeks after the letter
The point is it is different for everyone based purely on the MOC. They have their own staff to input the info, if they opt to do letters first and input the slate second, than the AFA will find out after you.
I wouldn't worry about it. The reality is the AFA has the nom, and if this is your 1st nom you are in queue for getting your WCS. If you already have another nom., than they will look to see if you are the highest WCS on this slate.
Remember for the AFA 75% of candidates are appointed in March.