Problem: If you're experiencing 404 errors on WooCommerce product category archive pages when the WPML String Translation plugin is active, specifically in the default French version, this might be due to incorrect slug translations between French and English. Solution: We recommend checking the WPML > Settings > Taxonomy translation to ensure that the slugs are correctly translated. If the issue persists, try deleting the translations and reconfiguring the 'product' and 'product category' permalinks, then set up the translations again. This approach addresses potential database issues with permalink translations that may have occurred during a recent plugin update.
If this solution does not resolve your issue, or if it seems outdated or irrelevant to your case, please visit our known issues page and check if there's a permanent fix available. Ensure you have the latest versions of themes and plugins installed. If problems continue, we highly recommend opening a new support ticket at WPML support forum for further assistance.