Screenshot below will show to how to join in a discussion
You can find this discussion panel section in below of all posts published on website.
or sign up with disqus or sign in using any of the social media profile. advanatage is that you can use one account to post comments throughout website posts.
After login to your account start typing your comments and post . the message will not held for moderation.
if your problem is not resolved . contact customer care.