Interesting. You've never used your private messaging system?
Depends on which method you use to view the forums as far as how to check your inbox. I use Classic view, and in Classic you click on Your Notifications located just under your user name in the box to the upper right of any forum page, then click on Unread Private Messages from the drop-down menu. If you view with the mobile view let me know and I can provide you those details. The message is more or less outdated now, but it was still something at the time the staff felt necessary to communicate.