@Rasheda3 Note the domain of the email address that the email from Catherine is coming from - that's one that's automatically generated with messages sent from within Airbnb's system. That's a good thing - it means the correspondence is recorded by Airbnb, even if it's not appearing in the chat on your mobile device. Using the desktop version of Airbnb should clear that up - the app is crap, and it doesn't always load messages in real time.
There's not a clear case for a penalty-free cancellation here - it's not an instant booking, there are still several days before the scheduled check-in date, and the guest is not required to respond to messages or accept the booking change instantly. If your concern is that the guest isn't who they say they are, you can lay out your requirements for check-in:
- All registered guests must present IDs matching the names submitted
- No additional people are present
It would be easier for you overall if those terms were in your House Rules, so you have a firm policy to refer back to.