Check to see if your mailbox (or the recipients) is full. I just did a test with Aaron, and it's working for us. I'll see if there are any errors showing up on the dashboard.
I honestly don't have any idea what the current number is. I checked the error log , and it said that you had an invalid subject/title line. Did you enter a subject? Xenforo is goofy with the PM's. (I'm not a fan.) You have to select "Leave Conversation" to delete it from your in box. They didn't ask me...... I'll send you a PM in a minute. Let me know if it works.
Dont know if I put a subject. Don't recall seeing a space fit it so probably not. I think the software choice of making everything an unknown error is not helpful. Got notice of a pm. Not sure if I can get it from Tapatalk. Sent from my iPhone using Tapatalk