As of March 2nd, 2020, the Instagram platform will be deprecating its API. This will directly affect the Instagram feed section in all WordPress & Shopify themes. Read more on how it affects your theme here: https://fuelthemes.net/important-notice-instagram-feed-removal/

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What do I need to purchase to activate Language and Price Switchers?

You can purchase WPML from: https://wpml.org

After that, you can download WooCommerce Multilingual from: https://wordpress.org/plugins/woocommerce-multilingual/