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Please note there is no support on these forums as explained in the overview and pinned post.
Support is only by volunteers in their spare time so to report an issue please use github and provide as much information as possible:
https://github.com/hyyan/woo-poly-integration/issues
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Can you be clear about whether you are talking about the attribute name or attribute values or both?
– the values are translated by going into configure terms and translating them just like tags, not the string translation table
Check Languages, Settings, Post Types and Taxonomies, Custom Taxonomies and check that translation is enabled for the attributes in question.
When you say not visible on the product page do you mean the View page or the Edit page?
For the attributes you want to show, check in the Product Edit screen, Attributes, “Visible on the product page” should be checked.
When enabling Translation on an Product Attribute for the first time, you may have terms already existing without translations. In this case you visit Polylang languages page and follow the prompt to assign items with no language to the default language.
See more details on the wiki:
https://github.com/hyyan/woo-poly-integration/wiki/Product-Attributes