Hey Laurens,
please download the archive from my repository, unzip it, and upload the containing files into the theme root folder (/wp-content/themes/Kanso/), replacing the existing files when needed.
The new „Page: Google Map“ page layout displays a full-width interactive Google Maps interface, e.g. to use before the contacts page. In order to create a Google Maps page, add a new page and declare the page layout as „Page: Google Map“. Then go to Google Maps, find the location you need and press on the little cog icon in the bottom right corner of the screen; in the pop-up window, click on the “Embed map” tab, copy the link (it should begin with „<iframe“) and paste it into the content of the page. Update/save the page and do not forget to include it into the one-page display in the "One-Page Website" tab of the theme options panel.
Please let me know if it works as intended.
Best,
Andrii / Satori Studio