PayPal Zettle POS for WooCommerce

Why does my WooCommerce product library fail to synchronize with PayPal Zettle?

Your installation may not use HTTPS. To allow syncing with PayPal Zettle, your shop needs to be accessible through an encrypted connection with HTTPS. To learn how to setup your WooCommerce store securely, please have a look at the WooCommerce documentation regarding SSL & HTTPS.