I think we've got the comment problem solved (maybe).
Try this:
At the bottom of a post there will be a (I think highlighted) phrase indicating either 'no comments' or a number of comments).
Click on that.
You'll see an 'enter your comment here' box.  Click in here and enter your text.
When done click on the 'comment as' drop down menu.
Select 'Google account' if you are signed in Google, you can try the name option or (probably easier) select 'anonymous' and just end your comment with your name.
Hope this works, we would like to hear from you.
Dale