When a listing on your site shows ‘No dates available’, that listing has no open, bookable nights anywhere in its calendar in your PMS.
Why this happens. Your site’s availability mirrors your PMS calendar directly, so the site is reflecting exactly what your PMS sends.
What to check in Guesty. For a Guesty listing, open that listing’s calendar in Guesty and look for any of the following: an owner reservation, where the unit is held or blocked for owner use; a manual block, where someone blocked the calendar manually; the listing being inactive or unlisted in Guesty; or Blocked by default, which means the listing has not been fully set up for availability yet and has no rates or availability published.
Once you clear the block or open the calendar in Guesty, availability flows back to your site automatically on the next sync.