Ajax Product Filter cant be translated with WMPL

Hi, I have the filter working perfectly on English version of the site: https://koreancosmetics.cy/shop/

But on the Greek version its impossible to add the filters except the brand name and the prices.

https://koreancosmetics.cy/el/%ce%ba%ce%b1%cf%84%ce%ac%cf%83%cf%84%ce%b7%ce%bc%ce%b1/

I’m sure I’m not the only person to encounter that problem but couldnt find the solution. I would appreciate a lot if you could help me fix that. Thanks!