Problem: The client was experiencing issues with translated parent/hub pages in Thai, which after some time, would automatically redirect back to the default English version. This redirection was inconsistent, with some pages functioning correctly while others reverted to English. Solution: 1. We recommended disabling all other plugins and switching to the default WordPress theme to check if the issue still occurred. 2. If the problem persisted, we suggested editing the slug of the second language page by adding '-1' to ensure uniqueness, although the client preferred to maintain identical slugs across languages. 3. We advised checking the WPML > Settings > Post Translation Settings and ensuring it was set to 'Translated only', which was already done by the client. 4. The client was also instructed to delete the problematic translated page, remove it from Trash, and then save the Permalink Settings again. 5. After these steps, the issue was resolved, although the exact cause was not clearly identified.
If this solution does not apply to your case, or if it seems outdated, we highly recommend checking the related known issues, verifying the version of the permanent fix, and confirming that you have installed the latest versions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.