1.- Please follow these steps to isolate the cause of the issue:
- Create a full site backup or create a staging site with a copy of the live site (you can use WP Staging for free)
- Update any outdated plugins or themes
- Flush any cache memory that might exist
- Activate the WordPress debug mode as described in this guide: https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/
- Deactivate all plugins, including the WPML ones
- Activate a default WordPress theme, like Twenty Twenty
- Activate the WPML plugins and Elementor
- If the issue disappeared, start by activating the theme, and then the rest of the plugins, one by one, until the issue appears again and you find the culprit
- Check the debug.log file (located within the wp-content folder) and look for fatal errors that correspond to the date you are running these steps
Can you tell me the results of the steps described above?