This thread is resolved. Here is a description of the problem and solution.
Problem:
The client is trying to have one integrated sitemap for all languages while using WordPress SEO by Yoast but is encountering separate sitemaps for each language.
Solution:
If you're experiencing this issue, we recommend you follow these steps:
1. Ensure you have taken a backup of your site for safety reasons.
2. Install the WPML SEO plugin, which is necessary for the Yoast SEO plugin to function with multiple languages. You can install it from your WP Dashboard under Plugins > Add New Plugin > Commercial tab, or directly download it from here.
3. Navigate to Yoast SEO > Settings page.
4. Disable the XML Sitemap option, save changes, then enable it again and save changes.
5. Check your sitemap at https://alpitools.com/page-sitemap.xml to see if the issue is resolved.
For more detailed instructions, please visit this documentation.
If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have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 you still need assistance, please open a new support ticket at WPML support forum.
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.