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Problem:
In a WooCommerce shop with multiple languages, the 'product-category' slug was translated for different languages. However, for the German language, setting the slug to 'produkte' results in a 404 error when visiting the page. The backend shows the Dutch translation instead.

Solution:
We analyzed the issue and determined it is not directly related to WPML or WooCommerce, but rather to the permalink structure used. WordPress uses specific rules to determine what content to display based on the URL visited. If both single products and product categories share a similar permalink base (e.g., site.com/products/), WordPress may struggle to differentiate between product requests and product category archive requests, leading to errors like the one experienced. We recommend changing the permalink structure so that products and product categories do not use the same base. For example, use 'products' for the product category base and '/product/%product_cat%/' for the custom product base. This adjustment should resolve the issue.

If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the problem persists, please open a new support ticket at WPML support forum for further assistance.