You need to find the email you received from Ebay when you bought the item. Check your personal (not Ebay) email folders for around the date you bought.
If the estimated delivery date is shown as 16th November, you are still in time to open an 'item not received' case with Ebay. You have to do this within 30 days of the latest estimated delivery date.
It looks as if you have not used this account, the one you have posted from, for a very long time.
So, do you have another account, maybe with a similar name or did you make this purchase as a guest without logging into your account?
Even an item from October would be in your purchases if you bought from this account. See if your emails give you a clue.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)