Yes, I've been having difficulty adding comments. You may have experienced the same issue.
It may have something to do with NING by which MyEC is powered - it seems NING has always been making some changes here.
Sometimes I need to click on the 'Add Comment' twice or more times before I can see the comment. It can be so frustrating, though - I hope everything will be back on track again!
That's why I suggest you 'strike while the iron is hot' - in other words, I suggest you enjoy writing blogs or adding comments when there's no technical problem like this.