You don't need to do anything.
For the first item, the tracking on Ebay will catch up eventually.
For the second item, RM will attempt delivery again. Even if it doesn't need a signature, it perhaps wouldn't go through the letterbox.
"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)
