Selecting a service needs to change available times

Hi,
I've got a bit of a problem with Appointments+ on my site

When you select a service, it does automatically change to show details of the service. However, it doesn't change to show available times.

The implication is that when you select a service (with the details of the service changing) that the details of the available times should change as well.

This is causing some confusion as people end up booking the wrong service with the wrong service provider.

Is there any way that the "Show available times" button can be effectively clicked when the service selection is changed please?

See an example here:
http://www.newyouweightloss.co.uk/make-an-appointment/