Cannot change particular texts from template

Hey guys, I just got this new template and am trying to launch my portfolio. Still, the text fields seems to be wrapped together, and when I change ttexts in the “03” section, everything changes all along, it seems to have something to do with CMS but I am a complete noob… Any help? This would save me life, thanks everyone.

Here is my site Read-Only: LINK
(how to share your site Read-Only link)