Hello @Jorge124,
Cancelling has serious implications for the host who does it.
You may be fined by Airbnb, they will also block the dates of the booking so no one else can book them and you will loose, for a year, the possibility of becoming a superhost.
If communicating with the guest doesn't solve the problem I'd suggest contacting Airbnb.
Make sure that any communication with the guest is done through the Airbnb platform so Airbnb can see it if you contact them.
Contact-Airbnb-A-Community-Help-Guide