@Veli-Matti0
It may just be a vindictive prank but..
Sometimes if you receive a mass of spam, it may indicate your password has been breached.
Check to see if there are any unexplained log in events to your airbnb account.
The spam can be a deluge in an attempt to conceal and distract you from changes made to your payout method to divert payment routes or bookings with immediate cancellations to extract from stolen credit cards.
Worth to keep in mind and prudent to check your settings.