Product Permalinks Glitch

Hi guys,

Below is an example of what my product permalinks is showing me.

Under Default : https://www.johnnyprosciutto.com/en//product/sample-product/

The other options all show a // after /en.

Can anyone help me as to why its happening and how to fix it?

I’m running WP 4.9 with the latest Woocommerce & WPML installed