How to book a trial-session:
'Sign in' > 'Create a new account' > click on a timeslot > 'buy credits' > buy a 'trial solo/duo' > click again on your timeslot > confirm booking
You can book between 14 days and 6 hours in advance.
How to cancel a booking (latest 24 hours in advance)
Click on your booking > click on the icon 'pen & paper' > 'delete' / trash