pufferfish

i placed an order with wex, but one of the items wasn't in stock (free battery grip) does fujifilm count date of purchase for promotion as when the order was placed or when the money was invoiced and taken out? there could be a discrepancy between the two as wex don't have the the battery grip in stock. if so, I need to cancel order and try somewhere else as double cashback promotion ends on 5th jan (sun)