I've had WpDiscuz for a few years now and it's the best system. But it stopped working, I don't know if because of Wordpress updates, the comment button doesn't appear. I've tried to disable plugins, all of them, but the button still doesn't appear.
Could you please leave some example URL to allow us to check it?
Still same, but thank you anyway.
I instaled a older version, and comment box appear without button for send.