"There are lots of ways to create rejections that are out of the hands of the preparer."

Of course. I sent my out-of-state family to the same local preparer and my mother's return got rejected for wrong ID (? not the preparer fault and not wrong...) and this filing year, rejected again because "the spouse that died the year before is listed on this return" (not listed...where do they get this stuff) so I supposed I should apologize to them for lowering their approval rate.