Tom, you may have already considered this, but it is possible that the problem might be with your e-mail account. Strange things happen and often important e-mail is considered spam by whoever has control of that, and it goes into your spam folder, and if you are like me, I never look in my spam folder, then after so many days it gets automatically dumped. I'm not sure what else might happen, but maybe there are other possibilities.
Also when I log into jaderune.com in the forum here, at the top of this page where it says, "User Control Panel ( 0 new messages)" or it might say "(1 new message)" or it might say "(2 new messages)" or however many new messages, and then View you posts. I wouldn't need that notification because I always look at the top of the page and I don't need my e-mail to alert me, although that is fine when it does, but I know as soon as I log into the forum if I have a Private Message.
Other than that, and if there is another problem then the people who maintain this site would have to trouble shoot that.