A related solution (for you reference) for setting the hreflang tag.
For changing the url slug to another language:
- Once you setup multi language in Wix, you can set the slug of the url to another language also.
[Wix Multilingual: Managing Languages in a Multilingual Site | Help Center | Wix.com]
[Wix Editor: Changing Your Page URL | Help Center | Wix.com]
If you are using dynamic pages to create the product page, check out this video by Lazarina Stoy.
