Calendar is blocked...

[Sherry0]

but I have no reservations.  How do I clear it (which I have tried), or how do I look for potential booked reservations that I may have approved, but now can't find...

[Queenie0]

Any reservations - pending, approved or cancelled - will appear on your Dashboard.

https://www.airbnb.com/help/article/933/how-do-i-use-my-dashboard-as-a-host