You should be able to edit the tracking in your Ebay orders.
It's usually better not to message buyers asking for feedback - Ebay don't take feedback as evidence that an item has been received anyway. Buyers can leave feedback in error.
"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)