I received a PM from @Spaceman today. I replied to it. A few hours later I went back to it to ask him a question. After hitting submit I received an error 500. I tried to submit again but it said my post was too similar to what I had tried to send previously.
I clicked on spaceman’s profile and then on the send personal message icon. I typed the exact same thing and received the same error message saying that what I had tried to post was too similar.
I still haven’t been able to message spaceman.