The theme has been tested and is compatible with the following multi-language plugins:
1. Polylang

Polylang is a free WordPress multilingual plugin with more than 500,000 active installs. It allows you to easily create a multilingual website without purchasing the premium version.
Note: If you are running WooCommerce or need support, then you may want to upgrade to the Polylang Pro or purchase their WooCommerce addon.
Polylang has great instructions on how to create a multilingual website in their own documentation.
2. WPML

WPML (WordPress Multilingual Plugin) is a premium multilingual plugin. You can use the same WordPress installation to create content into many different languages.
It offers an easy to use interface for managing translations. It also adds language switching options for your users.
WPML has great instructions on how to create a multilingual website in their own documentation.