I don't see a PM here anymore, so I can provide an e-mail at one of the other sites if you can't find a tree.
You can still use the PM system which is still here.
Either, when logged in, just click on My Messages (in the dark brown bar at the top) and then click Send a Message.
..or, click on the clipboard looking icon under their avatar, if it glows green they are online. Then send your PM.