This thread is resolved. Here is a description of the problem and solution.
The problem: user couldn't use the setting for "Post Name" in WordPress's permalink Settings with WPML active.
The solution: user had to check and ensure that URL rewriting's mode was enabled. - Check if there is a .htaccess file in the root folder - Check URL rewriting's mode - Enable it in the case it wasn't - Regenerate the permalinks.
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