there, I installed Appointments plugin on this site

Hi there,

I installed Appointments plugin on this site http://cpfyk.local-online.com.au/intake-meeting/.
I just wonder why I am redirected to "Thank you page" even I did not able to fill up the form and just click/tap the Cancel button? In the Appointments settings, I set already set the Cancellation page but still the one that show up is the Thank Page. Any idea or help is highly appreciated. Thanks. (see attached screen shots)