@Eric48 There is definitely something strange going on. Regardless of how I search, I can sometimes get your listing to appear, but other times, not. Even when I search for 2 or more specific (and open) dates. And, for a bit of extra weirdness, if I repeat the exact same search after clearing/closing my browser, its a crap shoot whether you show up or not. As in random.
This may seem like an odd suggestion, but in case AirBnB's database has gotten out of whack (especially if they have mirrored copies of their database), you might try going to most of the major settings (# of guests, beds, bedrooms, private/entire, etc) and reset them to some other value (doesn't matter what, just something different) -- keeping careful track of which ones you change. After you've reset several, clear your cache/history, close your browser and restart. Then go back and reset each of the changed items to its proper value. Be sure to use ONLY the Chrome browser when you do this.
That *might* refresh your listing in their database. I've had this happen on a smaller scale (and a different issue) for my listing.
If none of that helps, definitely get in touch with AirBnB.