First time using this platform-
1. I had forgotten to block a period of dates and a guest has instant booked a reservation in that period.
2. I am trying to cancel with one of the given options "I cannot host on these dates anymore".
3. An error message keeps coming up: " reason is not valid".
I have explained to the guest in private message and they are okay with it but now I am having trouble even cancelling their booking to complete the refund process for them.
What should I do?