Hi
Thanks for coming back to us and the feedback on the site.
We're constantly working on changes and so your feedback is really important.
Private messages work like this.
When you send a private message it "sits" in your outbox until it's picked up. So until that person logs in and retrieves the message it doesn't leave your outbox. That isn't a problem if the person is a regular user but if they're not then it could sit there for a while.
The best way to make contact is to email someone. When you have logged in you'll see a little contact box by the user name . In the pic below it's just below the FB and Twitter logos
If you click on that you can email them and that means it lands in their email box immediately.
Does that help?
Shout if you need any more help!
Thanks again for using NVN