It's arrived on the My Snipes page so the confirmation button has been pressed on the Snipe It Now page...
The fact it has moved in the list gives us a clue - something has happened to make it move (i.e. the auction ended), but why is it still on the list and why is it still showing Ready?
Near the top of the My Snipes page is a 'pull down' that says, in my case, "Ready to Snipe". What does yours say? Experiment with it as, if you set it to "All Items" then it will show items that you have won and lost as well. This is where the button is - no idea what you are confirming but it takes you back to the item - strange!
Change the pull-down back to "ready to Snipe" to see if the snipe in question disappears. That's the best status to leave the page in (it seems to remember!) for day-to-day usage...
As to the status not changing, I'm afraid I cannot answer that.
R2