Hey, I just got a PM about 20 minutes ago from someone (we were in a PM convo) and even though it says he sent a response and he has the most recent post in the pm thread, I can't see his actual post at all, it just shows the last post as the last one I sent.
For reference, please see staff response in this related thread: https://forum.emptyclosets.com/index.php?threads/delay-in-pms.470123/
You have to be a Full Member, and you can only message other Full Members. After you have 50 posts and have been on the forum for at least two weeks, you can apply here.