At present email notifications of new posts or replies is broken. I think the web site may be sending them (although I’m also not sure that is true either .) The web site is old and pretty broken (little maintenance for the last 4 years), but due to suspected spam bots (again suspected but not confirmed last I heard) the site is on many spam block lists and the mail gets classified as spam or discarded. The bottom line is that you will not (at present at least) get an email notification that someone has replied to your post as you used to. So you need to check for new posts after you post something. Hopefully this will get fixed (the folks are working on a new web site I believe) but for now this appears to be how it is.