[Meta Slider] Redirecting website gives me pain

My theme : Vantage Premium
Slider : Meta slider (works together with vantage)

The problem: Slider doesn’t go responsive in IE9 / Older phones as well as the menu (set in the options of Vantage). This problem doesn’t occur on the original page : https://www.brune.nu but it does on the redirected page : https://www.salonboottourist.nl

I’ve been working on this website for quite a time. Before handing it over to the client I tested the website on IE 8 / 9 / 10 – chrome – safari. Only IE 9 gives the problem at the redirected link.

Thanks for sharing and caring!