Appointments+ shortcode select= and autorefresh= not working

Hello,

Appointments+ shortcode select= and autorefresh= not working. The select= shortcode worked for a few minutes then stopped and I can't get the autorefresh to work at all.

This is the code I am using:

[app_services autorefresh="1" select="STEP 2: Please select a service provider:"]

Also How can customers choose multiple time slots when booking appointments? This needs to be in 30 min increments. and appointments need to have at least a half hour spacing between next appointments. Also is there a way to display the appointments on the calendar not just what times\hours are free and which ones are not? Sort of like looking at an MS outlook calendar.

Thanks