linking products in multiple languages

I’ve translated products in different CSV files. Then uploaded those in different languages. The problem is that I cannot link the translations to oneanother. I would need to link them, as I have a lot of products and they are so much easier to translate in a csv file. I can link one way translation by adding description as a link (becomes funny though as the picture is also in the translation. In the other finnish product is the original, unattached product, but then it only shows finnish as the languages.

I’ve seached all over the net solution for this, but never found anything that answers this question.

https://company314.fi/tuote/snapsilasi-oden-2/
https://company314.fi/en/product/schnapps-glass-oden/

P.S. Where do I see my version of WordPress?
Now I only saw what I have in my computer uploaded in the beginning.

The page I need help with: [log in to see the link]