Hey all of that text can be translated by translating the theme into the language you want, with a .po file. As an example, the theme has been translated into a couple languages you can see them in the languages folder of the theme. If you have one of your languages in polylang set to a translated language for the theme then it will switch. try spanish as an example.
You can learn about translating themes with a po file and po edit here: http://premium.wpmudev.org/blog/how-to-translate-a-wordpress-theme/
Kadence Themes