@MirabellaPattern: Remember that the stats you now see are for the December star (September, October and November). The "Last Review Period" shows the stats for the November Star (August, September and October).
Because an entire month's of review data has dropped off.
Now it counts September, October and November.
I don't understand your diagram.
Today, the review period for star seller changed.
It now counts orders/reviews/messages in the months of September, October and November.
The amount of sales went down, because it was counting August. Now it's not.
It counted august, september and october until the month changed. It only includes 3 months including the current month, so now it includes september, october and november (november will have nothing unless you've made sales today). It took off the amount from august in the calculation.
Are you looking at the part in purple that says 'December's progress'?
Yesterday the stats in that spot were for Aug/Sep/Oct.
Today in that spot the stats are for Sep/Oct/Nov.
Most people won't have much if anything because Nov literally just started today.
@MirabellaPattern: Remember that the stats you now see are for the December star (September, October and November). The "Last Review Period" shows the stats for the November Star (August, September and October).