Need assistance with changing Header Background image and Text

Hi, I'm using floox template and using SP Page Builder to make frontend changes, which works great, however i have come across a scenario where i'm not able to figure out how to make background image changes in the header and also change the text in the header, for some pages i'm able to make the text changes in SP Page Builder Pro - Edit Page, however this is not working for all pages e.g. About Us, Service etc, also i'm not able to make the background image change for any page either using SP Page Builder Pro - Edit Page or SP Page Builder Frontend editor, Pls can you assist, I'm including a vide with the details > https://youtu.be/bnFG474Empk