Barely an hour warning
At 11:01pm central time USA, December 31st, I got an email saying they were changing from paying on the 11th to paying on the 1st. I didn't see this email, I was at work. At 12:17am, January 1st, My card was charged for the new kit. I was still at work. I may have to go through my bank to dispute this charge. An hour and 16 minute warning doesn't even sound legal.