This thread is resolved. Here is a description of the problem and solution.
Problem: I have installed a plugin (Divi Dashboard Welcome) that doesn't seem to support WPML is the way it is configured on my site.
The plugin is explained at the following link: https://divilife.com/downloads/divi-dashboard-welcome/
The plugin is used to display a specific page in the welcome iframe of the dashboard. It works well in the native language (French) but does not work in English. The page as an English version created and is private.
Solution: Change the get_home_url()... for apply_filters( 'wpml_permalink', '/divi-dashboard-welcome-screen' ); in the plugin's code (in iframe) and the welcome page will work in secondary language too.
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