When you cancelled a reservation as a host, there's 4 penalties upon cancelling.
1. "Possible" cancellation fee
2. Automated cancellation review on your listing
3. Disqualified for Superhost status
4. Your calendar would be blocked**
If you feel like this cancellation was not your fault, you should contact Airbnb to have them review the scenario. Hopefully they could waiver the penalties for you. (Examples that they would waiver it for you is if the reservation was consider "Guest supposed to cancel" or Extenuating Circumstances)
Hopefully Airbnb could help your first cancellation.
Love,
Helena V.