While one of my teammates is handling your ticket, I will provide you with some initial debugging steps.
First, please ensure that your site is running the latest version of WPML, which is 4.6.14. This version includes the most recent bug fixes and improvements. Although updating may not completely resolve your issue, it's essential to work with the most current code for effective troubleshooting.
If you don’t see any updates available, please click the "Check for updates" button found under Plugins → Add New Plugin → Commercial tab.
Next, try updating the page translation. Make a slight modification to the original page, save it, and then navigate to the WPML translation editor to complete the translation.
Please remember to back up your database before proceeding.