Thank you for your reply Isaac, However I don't think my account was hacked, but the one of the guest. Because how is it otherwise possible that a stranger has access to the message I wrote and send it to phone number from a scam number? I have googled the number, it turns out to be a Swedish scam number and several people there said they got messages through that number claiming they were from Airbnb. Now that even my private message from the platform was quoted in that message, makes it even more suspicious.
Imagine all the evil these scammers can do when they can access private messages send to their guests on the platform and access guest phone number and then send them text messages pretending to be airbnb?
Airbnb should at least report these phone scam numbers and help the community stay and feel safe!