How can I filter product reviews by language on my website?

Hello dear community,

I added the Product Review App from Shopify to my companies Website. The app is working nice, but we would like to filter the reviews by language. We are using Weglot as our translation software and It may be possible to add the current selected language of the shop as the language of the review. My question is: How can I add this to the reviews so I can filter them by language?

You can see one of our shops here: Link