For my appointments page: http://fixxed.com/test/neh/schedule-an-appointment/
If I have Payment Required set to yes, 2 things happen. No Paypal option/button appears, no confirmation message or emails sent to admin or client. There will be the attempted appointment sitting in the Pending Appointments in the admin.
Here's what I have:
[app_service_providers] [app_services autorefresh="1"]
[app_pagination step="2" month="1"]