I’m having the same problem. I hit submit and the reply just disappears. Never ends up on the blog, does NOT end up in the comments to be moderated, and can never again be seen from the dashboard. The few times I’ve tried to rewrite the comment to submit it again, I get an error message telling me that I’ve already submitted a reply with that wording. ? So it’s somewhere, but I cannot find where to make this visible–or even where to find them.