I sent 20 xrp from poloniex to an adress but i checked on the blockchain and there is 0 balance after 2 hours from transaction, noting was received.
Also it says "Inactivated address".
The receiver should do something to activate the adress?
on poloniex it says "processing"
AFAIK, you need to have 20 xrp to activate that wallet. But that should suffice to activate that wallet. I've sent 20 xrp to my wallet as well years ago to activate it but I don't know in your case if you have to deposit another 20 xrp just to activate it because that's how it went for me.