@Bo-and-Whitney0
Ok...that is very strange!
Try logging off ALL devices (phone, computer, Tablet, etc.
Delete the Airbnb App on your phone
Reinstall the Airbnb App on your phone (but don't login to App)
Login again on a computer using your EMAIL not your phone number
1. I'm assuming you have tried to unblock on both a computer and on the app on your phone?
2. You can also try changing your availability to "Unavailable by Default" on your calendar settings and then try to manually unblock the dates you want open (not just the dates in question, but any dates you want open).
3. Are you using Pro Tools? if not, try turning on Professional Tools in your account settings. Then use the multi-calendar (strip calendar) to try and unblock the dates
4. Be sure you have disconnected the pricing software on their platform as well as on Airbnb. Sometimes those using PriceLabs Pricing Software don't realize they actually signed up for their channel manager partner IGMS (which I don't recommend BTW):