Between 13:11 and 22:19 UTC on 25 August, some travelers were unable to complete a booking when submitting the questions on an organizer's checkout form. The cause was a validation change that rejected certain valid answers. The change was reverted, and confirmed bookings are completing normally again.
If you attempted a booking during this window and it did not go through, please try again, or contact support, and we will help you complete it.