Hi Mia,
First, try to go to Your Listings and make sure it's Listed.
You could tell if you click Your Listing > click Calendar and more > on the left toolbar, at the very bottom, should be a green dot with the words "Listed."
If you click Your Listings > click Calendar and more > click Location. Make sure the listing's location indicated are correct.
Sometimes when you enter the address, the system doesn't find it and display something close to your address, but not precise enough.
When you try searching as a different user or computer, make sure you're not too zoomed in the map to where your listing is. Sometimes that triggers problems popping up (for your security purposes).
Hopefully you'll be able to find your listing this time.
Love,
Helena V.