Installing Boldial Demo

Hi guys,
Ive bought your theme, installed demo as instructed but it doesnt look like it should.
I understand why the images are missing (copyright and all) but sections are not the same, in live preview sections are bordered diagonaly, while in installed demo sections are devided with flat lines…
https://themes.ishyoboy.com/?theme=boldial-wp live preview with diagonal sections borders
https://www.internetcoding.solutions lame version of demo =), without any image and flat border lines? How can i modify my theme to look like demo?
Also i got menu sections dupliceted? How to remove that?
thanx,
SA