@Denise788call Airbnb immediately. How does a guest "accidentally cancel"? It sounds like a scam to me. If Airbnb was the one to do the cancelling, there could be a very good reason you don't want to host them. I wouldnt let them check in until you get this sorted out.
@Denise788 Hi, are your guests still there? I agree with @Alexandra316 call Airbnb asap. It's very suspicious that they accidentally cancelled. I hope you haven't been scammed by these people.
I had a guest who accidentially cancelled their reservation. When I followed up with her sharing that I'm sorry that they cancelled and hoped they'd consider staying with us in the future, she was shocked to learn about the cancellation. She rebooked the reservation so mistakes do happen.
Yes, contact ABB immediately.
Best of luck with this situation! Please let us know how it was resolved.