1. Navigate to Appointible
Or use this link: http://app.appointible.com/setup
Log in to your account.
Click on 'Open Control Panel'.
2. Click on 'Configure online bookings'
3. Online booking page
Make sure the 'Online bookings page enabled?' switch is ON
4. Update Booking limitations
Navigate to the "Booking limitations" section.
Update the "Clients can book in the future" setting.