Some lines are not translated. The author does not help much in the decisions.
http://www.woocommerce-filter.com/hook/woof_get_more_less_button_xxxx/ - this hook doesn need any translation and shown you that it works. If no luck I asked you renew support to help http://c2n.me/3JHtrAX but got 1 star! Very friendly, in such way trouble on your side wioll not be resolved.