Appointments+ - Appointment schedule way off

I am working on a site where on a test site appointments+ worked beautifully but when I installed it on the live site it's acting weird.

I have it set up to only allow appointments on the day the appointment would be on, with a 1 hour lead time so that they wouldn't be able to make an appointment from the waiting room.

The way it is on the live site, it's now allowing appointments before now but nothing from now on.

What do I need to do to get this working? I have a client breathing down the back of my neck wanting to get the site working ASAP.

The site itself is at http://pediatricnightclinic.com