Problem: The client was experiencing an issue where after activating their website, content such as menus, categories, and comments were not set to the default language, even though posts and pages were correctly assigned after using the 'Set language information' and 'Fix post type assignment' troubleshooting options. Solution: 1. We recommended creating a minimal environment by deactivating all non-WPML plugins and switching to a standard WordPress theme. It's crucial to back up the database and website before proceeding. 2. We advised increasing the WordPress memory limit to at least 128M, preferably 256M, as the client's site was set to 40M. Afterward, the client should confirm the memory change via WPML > Support > WordPress > Memory limit. 3. We suggested running the 'Set language information' button again. If the issue persisted, we provided a link to documentation for resetting WPML: WPML reset documentation, reminding the client to back up their site before attempting the reset. After these steps, the categories and tags were successfully set to the default language.