Appointments+ log in required made the while thing stop working

Everything was working fine until i selected the option to make log in required, and choose the option to log in through three front end and put my Facebook app key in. When i saved the settings it gave me a php curl error saying google+ log in would not work and now my book an appointment page won't load, or it will only load the header.

Http://www.reviveskinservices.com/home/book-an-appointment