Seems myself and my programmer have tried everything but

Hello,
Seems myself and my programmer have tried everything but our scheduler is only showing the current month, and we need it to show 2 months. For example, it is now the 29th and no patient is able to toggle forward to Feb to schedule then. Can you please look at our page and let us know what we are doing wrong? Thanks. http://25chiropractic.com/make-an-appointment/.
Dr. Troy C