Hi Dieuwertje,
We are sorry for this. It needs code customization. you need to remove all responsive css from style.css file on line no 2398 /* =Responsive Structure to all below code
and as well as you have to remove this code from header-extension.php on line no 21 <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
and add <meta name="viewport" content="width=1078" />
Each and every time you update to new version you need to do the same customization.
Hope this may help you
Thank you!