Yame

Carambola

Multilingual Comments is an add-on for WPML / WooCommerce. This plugin makes it possible via its own plugin settings, to show 
– comments on blog posts in all languages 
– product reviews in all languages (also the average rating will be calculated as 1 total)
For example, if a WooCommerce product has 
– 4 English reviews 
– 7 French reviews 
– 5 Dutch reviews 
the product will have 16 reviews, no matter which language is selected.

Multilingual Comments

Multilingual Comments is an add-on for WPML / WooCommerce. This plugin makes it possible via its own plugin settings, to show: comments on blog posts  …

CodingFabian

Because WPML creates posts and pages for each language, comments from one do not appear on the other. 
This plugin merges comments from all WPML translations of the posts and pages, so that they all are displayed on each other. 
Comments are internally still attached to the post or page they were made on.
It uses the <code>get_comments()</code> api call, which in some circumstances might not return all posts.

WPML comment merging

This plugin merges comments from all WPML translations of the posts and pages, so that they all are displayed on each other.

Multilingual Comments vs WPML comment merging