I've sent private messages in the past without problems, but today it seems that I can't.
Someone sent me a PM that I really want to reply to, but my reply stubbornly refuses to leave my outbox. I clicked "submit," but it's still in my outbox instead of in my "sent." I composed a new message and copied and pasted the unsendable message into it, and clicked "submit," but the new message is stuck in my outbox as well. What do I do?