Free version is useless

Hello.
In the new update 5.2 you can activate new feature for making multiple (unlimited) bookings per same date in same calendar. Its means that you can receive several bookings for the same date in your Booking Calendar.
You can activate it at the General Booking Settings page.

If you need ability to have multiple independent calendars, where possible to receive only 1 booking for the specific date or timeslot, then you need to check the Business Small or higher version.

Hope new feature in this new update will be helpful for you.
Kind Regards.