Thank you.
We have checked issues related to theme settings.
Low contrast error you get at the slider slide https://prnt.sc/1tfvgif
Validator w3 CSS errors related to Elementor plugin styles https://prnt.sc/1tfv49g So, contact Elementor plugin to find out if they could fix them.
To fix duplicate ID error go to Appearance > Menus > create separate menu for the mobile and then go to Theme Options > Header builder > Mobile menu > choose newly created menu there. Save settings, check the site again.
