Time of plugin not synchronized with website time

Hi,

look at this post:

https://www.salonbookingsystem.com/how-to-properly-set-the-timezone-of-wordpress-for-salon-booking/

hey wpchef, how can i change the variable for the minmum time the user be able to book , now the minmum is half an hour , before there was an option that says always how can i get that back please .