They show up in my Sent file...like the one from early this morning at 12:08 AM and I know you haven't read it yet.
Something is weird.
I just now got your message and I replied and it shows up now in my outbox...you haven't read it yet. You should be able to see it.
I am able to chat with others via PM .....no problems with anyone but you apparently.

PS...I have have sent you a few messages lately...and no response. I thought you were just ignoring me.

The last one until just a few minutes ago was at 12:08 AM and it was a question about a mask.