No, I have just blocked part of the post. You can see it here in my test post:
http://www.tajomstvochudnutia.sk/pokus/
I have added [newsletter_lock] and [/newsletter_lock] before and after the text “you should not see”.
I have added this post into the category “blokovane” which is the category I want to lock by the newsletter plugin.
Where is the problem? How can I solve it?