[Resolved] Can't see Learndash courses in english

Sorry, Andreas, I had the code analyzed by ChatGPT to understand if it could affect my Italian SEO, and this is what it says:

Analyzing the new code provided, it appears to address the issue in a robust manner. However, there are some critical aspects that need to be reviewed to ensure it fully meets your requirements. Let’s break it down:

What the new code does:
Handles the translated slug for the custom post type (sfwd-courses):

It uses the wpml_get_translated_slug filter to fetch the translated slug based on the current language.
It provides a fallback to retain the original slug (e.g., i-nostri-corsi) if a translation is not available.

Builds the permalink:

Combines the translated slug, the category term (ld_course_category), and the post name (post_name).
Avoids errors with fallbacks and sanitization:

Ensures each component of the permalink is properly defined, avoiding malformed URLs or double slashes (//).
Potential issues or uncertainties:

Italian language:

While the code seems to handle Italian correctly, it doesn’t explicitly ensure that the original slug /i-nostri-corsi/ remains unchanged for Italian courses. If wpml_get_translated_slug returns a different slug for Italian, it might unintentionally alter the permalink.

Incomplete slug translation:

The fallback uses $default_slug (i-nostri-corsi) if no translation is found. However, this might not be sufficient in edge cases (e.g., if the translated slug is empty or differs from what you expect).
SEO impact:

The code should preserve existing permalinks in Italian, but if the slug changes for any reason, it could break existing URLs.

Expected outcomes:

If your goal is to:

Italian language: Keep the original /i-nostri-corsi/ slug intact.
Other languages: Translate the slug appropriately based on WPML settings.

The code will work only if:

The Italian slug (i-nostri-corsi) is explicitly preserved.
WPML is correctly configured to handle translations for the other languages

Possible improvements:
To ensure the Italian slug is never altered, you can explicitly enforce it in the code:

if ( $language_code === 'it' ) {
$translated_slug = $default_slug; // Keep the original slug for Italian
} else {
$translated_slug = apply_filters( 'wpml_get_translated_slug', $default_slug, 'sfwd-courses', $language_code, 'post' );
}

This ensures that for Italian, the slug always remains i-nostri-corsi, regardless of WPML’s configuration.

What do you think about it?

I switched the code from staging to live, and there’s only one difference: in the staging environment, when I open a course in English, after /en/ there’s courses, while in the live environment, it still shows i-nostri-corsi. Could you explain why?