How to password protect with Page Builder

Hi, i just downloaded this plugin (but i canceled...it didn´t work)
I work with theme Cardinal with Page Builder for layout.
I insert password in text box on top of page to protect pictures on this side, but it didn´t work.
Then i view page i see password-field on top and also pictures below.
I will password-protect all information below the password.
See my screen prints.
Whats the problem?

Best regards
L G Blom