When I create a Listing and Save it and then click on Go to Listing it says "Sorry, this item is unavailable."?
can you post a link to the listing?
I had this happen recently in my shop for multiple items - turns out it was a glitch! The one thing that worked was finding the listing in my listings, then manually deactivating and then reactivating. Worked for me, hope it does for you too
Perhaps it's been deactivated by a bot? Look in your inactive listings.