[Resolved] Custom post type articles lead to 404

Problem:

The client is building a bilingual website using WPML, with custom post types created via CPT UI. The specific issue is that accessing posts in English under the /exhibitions slug leads to a 404 error.

Solution:

1) Disable slug translations in WPML>>Settings>>Slug translations, then save the changes.
2) Resave the permalink settings under Settings>>Permalinks.
3) Clear all types of caches.
4) If the issue persists, it might be due to a compatibility conflict with the customized theme. We recommend testing with the default WordPress theme to check if the issue still occurs.
5) Ensure you are using the latest version of WPML String Translation and clear WPML caches from WPML>>Support>>Troubleshooting.
6) Resave the settings under WPML>>Languages>>Language URL format and Settings>>Permalinks again.

If these steps do not resolve the issue or if the solution seems outdated or irrelevant to your case, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix,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 the problem persists, please open a new support ticket at WPML support forum.