Hi, I have 3 languages on my web. Main language is CZECH.
I can see that products are not syncronized.
For example you can see that in the category Wine (russian version) there is no wine Marani
– Mtsvane Qvevri, even when it is in stock, an you can see cz/en version of it in the category in en/xcz verison. :https://www.zgruzie.cz/ru/product-category/gruzinskie-vina/
Please make the full backup of your site and check the issue on the Storefront theme to detect if our theme causes the problem. Storefront is a free theme developed by WooСommerce.