@Nanxing0
Nanxing , every case is individual and I don't know the circumstances surrounding your case but, from my time working in support all I can say is, the guest has broken one of Airbnb's cardinal rules and Airbnb have restricted the guests access to future bookings or future involvement with Airbnb, and this involves blocking the guest's message stream, not just with you, but with any other Airbnb user.
The booking however has been confirmed, Airbnb have been paid by the guest and as far as Airbnb are concerned the reservation is to be fulfilled. Now whether the guest turns up or not, they have not been offered a refund and will not if the guest requests it......you will be paid.
To verify this Nanxing, go to your home page and from the option scroll line select 'menu' and from the drop down box select 'Transaction History' and the payout for this guest should be showing as an 'Upcoming Payout', indicating that it is active and will be released the day after the scheduled check- in date.
I would like to be of more help but I don't have the required information to assist you further!
All the best!
Cheers........Rob