My Gallery didn't display content

Hi Professional team, I need your support againt.
1. my User, upload the picture in my gallery folder (my profile).
I can see my picture when I login.
when I didn't login and open my personal page, my gallery folder is empty. why ?
In CB > configuration > images > imagemagick, NetPBM, GD1, GD2 - all status not install.
what's the meaning ?
2. when I login, I can see all my article, when logout, folder article empty. why ?

Thank you team

regards, halim

I assume you installed the CB Gallery plugin?

If so please study the documentation included.
Make sure that everything is set for public viewing.