@Joseph2767 There is no problem. If you are taking bookings from other platforms and because those bookings are not from Airbnb, they are considering your listing blocked. Some hosts use Airbnb exclusively and some also use other platforms.
Yes there are some strange things going on. I also received a message (the same one, twice) asking me to open dates on one of my listings, because so many guests would like to book in June (it's winter and our very low season, actually). I checked the calendar and there was nothing wrong. I assume it's a new type of message they're testing and it's glitching.
Hello @Joseph2767, Thanks for sharing this. Could you please share a screenshot of the message so we can better understand why this might be happening?