First off, let me just say that this plugin is very impressive, and the Google calendar integration is great. It is set up exactly how I want it, and it is showing all the correct times as available/unavailable. I am hoping my problem is a very simple one... I do not get any message confirming receipt of the appointment. I have installed the plugin on another test site with nothing else installed, and when I confirm an appointment, I get a popup message that says "We have received your appointment. Thanks." I don't get that on this install for some reason.
The weird thing is that the appointments are actually being booked and confirmed successfully, and I get confirmation emails and everything else. I just don't get any message that would show the client that they successfully booked. I went back and switched to the Twenty Twelve theme and tried it; still no luck. I have no idea what the issue could be. I'm hoping it is something simple. Any ideas?