Where is this problem coming from?

-edit- Problem resolved thanks.

Hi there,

first of all i have no clue if this has anything to do with Gen.P but i do not know where to start. My website looks weird in the live version. If i open the homepage in pages of wordpress itself and show "preview changes" then it looks like it should (https://i.imgur.com/IuEx4sP.png)

But when i open the live site it looks like this (https://i.imgur.com/idgfDhE.png)

Like i said i do not know what causes this but also do not know where to start.