"1. The order numbers are sequential." Someone should try an experiment. Using two computers, place orders within a couple of seconds of each other and compare the order #s. Might be most accurate in the middle of the night an/or weekend. While not perfect, you might just get sequential order #s which would then add to significant clarity.
From March 24 till today March 29 would be 21563 orders and total would be 331454 so far thats about 4300 orders a day $$$$$$$$$$$$$$$ Multi-Millions in sales if thats in order