The keyboard scrolling should be working by the default. If it does not work on your page, please try disabling all the site plug-ins and also the browser plug-ins if there are any.
It is rather a template's fault. When I changed the template to the default Joomla, the keyboard navigation works correctly.
Please provide a link to your site.
It still does not work. Do you have a solution?It still does not work. Do you have a solution?
Are you using the smooth scroll option in the theme? It may be the issue, try to switch it off and see if that helps.
I found the cause. The section, columns, container blocks the keyboard navigation. When I delete all the elements, the navigation works correctly as on the subpages.
The scrolling is not working if Parallax option is enabled somewhere. Unfortunately the scrolling library used for this extension does not support keyboard scrolling.