Duplicated pages in bottom of home page

Hi there,
I’m using twenty seventeen theme with Site Origins and page builder
I don’t know how it happened, but now all the content of my website is in the home page, added at the end of it
I cannot get rid of it, cannot erase, modify with editor.. nothing.
The aspect is horrible in the published web, as it has also changed the buttons, text, etc. randomly (for the duplicated pages)

Can you please help me?

my website is www.bsbparents.com

Thank you so much for your help