Problem: The client needs to ensure that hreflang tags are correctly implemented and visible across all language versions of their WooCommerce site using WPML and Yoast SEO Premium. Specifically, they need to verify that WPML is generating hreflang tags as expected, including for staging environments, and how to include an x-default hreflang tag. Solution: We recommend checking that you have updated to WPML SEO 2.2.0, which supports the inclusion of hreflang tags directly into sitemaps, enhancing multilingual SEO. You can read more about this update here. To ensure hreflang tags appear in the page’s HEAD section, navigate to WPML → Languages → SEO Options and enable the option “Display alternative languages in the HEAD section”.
If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have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 issues persist, please open a new support ticket.
