I’m so sorry for this. These things happen to both sitters (who might have spent a considerable anount of money to travel to that specific location to look after a pet, and then has nowhere to stay) or to hosts (that don’t have a petsitter and wonder how they can travel and what to do). So for all it is important to have a plan B.
But there’s still time. Put up your dates again so your listing is live. When there’s 7 or less days to the sit, you are allowed to also publish your dates here on forum in the Last minute section.
If you would like help to optimize your listing, you can get help here if you put the link to your listing in your forum profile:
How to add a listing or profile link to your FORUM profile
Holiday sits are highly competitive. It could be that some locals would like to sit, for instance if they themselves get holiday guests and would like to leave their own home to homecoming kids or similar.
For peace of mind, do have a plan B at this point.