Version 5.4.2

Hello.
If you need to make update from old paid version of Booking Calendar to new Booking Calendar Free version, then please follow this instruction about how to make update to be sure in saving bookings and settings: https://wpbookingcalendar.com/faq/update-older-to-newer-paid-version/

2) In case if you need to get new update of paid version, then You can request the new update of Booking Calendar on this page: https://wpbookingcalendar.com/request-update/

3) If you will have more questions about the paid versions please contact here https://wpbookingcalendar.com/contact/

Kind Regards.

No, the range days selection available only in the Booking Calendar Business Small or higher versions.
Check more about this feature here: https://wpbookingcalendar.com/overview/#range-days-selection
Watch it in this video guide https://wpbookingcalendar.com/help/booking-calendar-video-range-days-selection/.
Kind Regards.