To cancel an Experience booking, Go to :
"My Bookings" section of your profile
Click the arrow in the bottom right corner of the Experience you wish to cancel.
Read the Cancellation Policy to understand any cost implications. You will also be informed about the actual cancellation fees when you cancel.
When cancelling, the timing will be based on the local time where the Experience is located.
Click the “ Cancel Booking” Button if you are ready.
View screenshot below for how that would look like: