Problem: The client was unable to add a WPML language switcher to their site, even when using the default theme and clearing the cache. Solution: We identified that the 'Atarim: Visual Website Collaboration, Feedback & Workflow Management' plugin was causing the issue. After deactivating this plugin, the language switcher could be added successfully. Since this plugin is not on our compatibility list, we recommend contacting the plugin author for support or considering an alternative plugin.
If this solution does not resolve your issue, or if it seems outdated or irrelevant to your case, please open a new support ticket. We also 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. For further assistance, you can contact us directly at WPML support forum.
