The caution message will disappear once your pricing and calendar are perfectly up to date.
Menu (top right)
Edit > Calendar
Make sure your Calendar is updated and synced with VRBO, Airbnb and or others. (If your calendar is completely open, block any single date - it does not have to be in the future.)
Alternative: If you don't use any other platforms
If you only use Houfy and don't sync availability with any other platform via iCal, you can remove this caution warning by enabling the "No other iCal/external calendars" setting:
1. Log in to your Houfy account
2. Go to Menu (top right) > Manage Listings
3. Click Edit > Calendar on your listing
4. Go to the Advanced tab
5. Under Calendar Settings, find "No other iCal/external calendars"
6. Click Yes
This tells Houfy that your calendar on Houfy is the only source of truth, and the caution warning will be removed immediately.
What else clears this message. The warning is really asking one question: is there any sign this calendar is being maintained? Any one of the following answers it, and the message disappears on its own:
an external calendar connected by iCal
a channel manager connected to the listing (Hostaway, Hostfully, Lodgify, OwnerRez, Rentals United)
any date blocked on your calendar
any reservation with a checkout date of today or later
the No other iCal/external calendars setting turned on
You need only one of them, not all of them.
For more information about synchronizing calendars please review this article.