Problem: You are trying to change the default language in WPML, but after doing so, you cannot switch to other languages. Solution: First, ensure that you have saved the WordPress Permalink settings after changing the default language. This step is crucial as it updates the URL structure to accommodate the new language settings. Next, check for any errors under WPML > Languages > Site URL format in your WPML settings. If there are issues here, they might be preventing the language switch. Further, please verify if there are any redirects in place that are not coming from WPML.
If these steps do not resolve the issue, it might be due to specific configurations or conflicts that are not covered here. We recommend visiting our known issues page to see if there are any similar cases. Also, ensure that you are using the latest versions of all themes and plugins.
