Hi @Maya-And-Matt0 - chances are you did inadvertently cancel the reservation through no fault of your own. Are the dates now blocked? If so, you definitely did. Air BNB has started a new feature - giving the guest the option to ask the host to cancel. The host recieves a notice which asks if they are ok with the cancellation & most of us would naturally respond "yes". It's the wrong answer. If you say yes, you are the one who is canceling. If you say no, you're fine to host these guests, then it goes back to the guest to cancel. There are several posts on this if you do a search. Extremely frustrating!
Contact Air BNB and hopefully they will sort it out in your favour. - Karen
https://community.airbnb.com/t5/Hosts/Contact-Airbnb-A-Community-Help-Guide/m-p/16165#M728