i found a bug with your plugin and WPML at line 329 in manager.php when you have a blog and create sub category for post.
In fact, when you are at the base, the blog list all posts related to main and sub categories because CPT can't find the posts in others languages.
For example :
Primary langage FR
AND ( cpt_onomy_tt1.term_taxonomy_id IN (5,6,7,8,9)
Secondary langage EN
AND ( cpt_onomy_tt1.term_taxonomy_id IN (5)
The bug comes from
$new_where = $taxonomies[ 'where' ] = "$alias.term_taxonomy_id $operator ($terms)";
Maybe can you help me to find a good solution for this.