Hi,
EB 5.0.37, PHP5.5 on Windows. Joomla 3.6.2
With Public access to posting comments, but moderated, I notice that when the comment is posted that the AJAX call gives back a 500 in the server with an exception thrown by Joomla (libraries/joomla/table/table.php/delete) which happens when it is called by components/com_easyblog/views/comments/view.ajax.php/210 ($captcha->delete()).
Could be a bug in J3.6.2 and I will update to EB5.0.38, but I suspect this is more persistent since no one else has posted this